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shield

 
Dictionary: shield   (shēld) pronunciation
n.
  1. A broad piece of armor made of rigid material and strapped to the arm or carried in the hand for protection against hurled or thrusted weapons.
  2. A person or thing that provides protection.
  3. A protective device or structure, as:
    1. A steel sheet attached to an artillery piece to protect gunners from small-arms fire and shrapnel.
    2. Physics. A wall or housing of concrete or lead built around a nuclear reactor to prevent the escape of radiation.
    3. Electronics. A structure or arrangement of metal plates or mesh designed to protect a piece of electronic equipment from electrostatic or magnetic interference.
    4. A pad worn, as at the armpits, to protect a garment from perspiration.
    5. A sanitary napkin.
  4. Zoology. A protective plate or similar hard outer covering; a scute or scutellum.
  5. Something that resembles a shield, as:
    1. An escutcheon.
    2. A decorative emblem that often serves to identify an organization or a government.
    3. A police officer's badge.
  6. Geology. The ancient, stable, interior layer of continents composed of primarily Precambrian igneous or metamorphic rocks. Also called continental shield.

v., shield·ed, shield·ing, shields.

v.tr.
  1. To protect or defend with or as if with a shield; guard. See synonyms at defend.
  2. To cover up; conceal.
v.intr.
To act or serve as a shield or safeguard.

[Middle English sheld, from Old English scield.]

shielder shield'er n.

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Thesaurus: shield
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noun

    The act or a means of defending: defense, guard, preservation, protection, protector, safeguard, security, ward. See attack/defend.

verb

    To keep safe from danger, attack, or harm: defend, guard, preserve, protect, safeguard, secure, ward. Archaic fend. See attack/defend.

Antonyms: shield
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n

Definition: protection
Antonyms: danger, exposure

v

Definition: protect
Antonyms: endanger, expose, lay bare, open, uncover


The most common and simple defensive armament carried by soldiers from prehistory to the end of the Middle Ages was the shield. Prehistoric cave paintings portray wooden shields carried in the hands of hunters as a means to ward off attacks. Bronze Age shields were stronger and larger. The Greek hoplite was named after his shield, the hoplon. The hoplon was wooden, rounded, and concave, although its size could vary depending on the length and strength of the bearer's arm, and by the 5th century bc a solid, thin bronze sheet covered it. The Greek shield had a special grip, which distributed the weight along the entire left arm. The large Roman shield (scutum) was constructed from three layers of glued plywood, each made of strips, with the outer pieces laid horizontally and the inner piece laid vertically, and covered in canvas and calf hide. A long wooden boss ran the entire length of the shield.

This shield changed in shape and construction, although not in size, during the 2nd and 3rd centuries; it became much more rectangular in shape and curved to fit the body. It also was rimmed by metal and covered in leather, on which were fastened bronze decorations and a metallic boss. The most common early medieval shield was convex, round, or elliptical and was made from strips of wood covered by leather. It also contained a large and heavy metal boss, and some were decorated with symbolic figures and ornaments. The main defensive armament of the Carolingian army remained the shield; it was also the least expensive armour, and all soldiers were required to carry it. Carolingian shields were round, concave, and made of wood, and some were covered by leather. They were rimmed with metal, and metal strips were sometimes added for extra strength. A dome-shaped metal boss was set in the middle of each shield with a grip running across the underside and attached both to the boss and to the wood. These shields were also much larger than earlier medieval shields.

For the next three centuries, shields followed the Carolingian standard in shape, size, and construction. This began to change in the 11th century, when almost all shields became long, narrow, and kite-shaped with rounded tops and pointed bottoms. Kite-shaped shields were constructed of wood and covered by leather with a metal boss and a metal rim. These shields were gripped by a series of leather straps which were riveted onto their insides. The size, shape, and material of the shield remained unchanged until the 13th century, when it became lighter, shorter, and more triangular. After the turn of the 15th century, the triangular cavalry shield was supplanted by a variety of shapes and sizes. The most common of these was oblong, either rounded or pointed on the lower edge, and often bent forward at the top and bottom. All cavalry shields of any shape were usually made of metal.

However, by the mid-15th century, shields began to fall into disfavour among the cavalry, already well protected by body armour. This trend continued until c.1450, when the shield continued to be used only in jousts. Three styles of late medieval infantry shields developed: the target or targe, which was large, flat, and equipped with a number of leather straps for gripping by the forearm and hand; the buckler which was small with a hollow metal boss and gripped by a crossbar across the inside; and the pavise which was a large oblong shield generally propped up by a wooden brace to provide protection to archers and crossbowmen. Most infantry shields continued to be made of leather-covered wood, and all styles were used well into the 16th century. The last serious military force to use shields were the Zulus who used them as offensive as well as defensive weapons.

Bibliography

  • Oakeshott, R. Ewart, The Archaeology of Weapons: Arms and Armor from Prehistory to the Age of Chivalry (New York, 1960)

— Kelly DeVries

The very old, rigid core of relatively stable rocks within a continent, such as the Fennoscandian Shield of northern Europe, or the Laurentian Shield of Canada. This is usually a Precambrian nuclear mass around which, and to some extent upon which, younger sedimentary rocks have been deposited.

Britannica Concise Encyclopedia: continental shield
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Any of the large stable areas of low relief (little variation in elevations) in the Earth's crust that are composed of Precambrian crystalline rocks. These rocks are always more than 570 million years old, and some are as old as 2 – 3 billion years. Continental shields occur on each of the continents.

For more information on continental shield, visit Britannica.com.

Architecture: shield
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A metallic layer that surrounds insulated conductors in a shielded cable; may be the metallic sheath of the cable or a metallic layer inside a nonmetallic sheath; especially effective in providing protection against electrostatic interference.



[Ar]

A piece of armour carried in the hand or on the arm, usually the left, to protect against and ward off blows from offensive weapons.

 
shield, piece of defensive armor, worn on the arm or shoulder to ward off weapons during combat, used prior to the dominance of gunpowder. Originally for individual defense during hand-to-hand combat, it is the most primitive and universal item of defensive armor. Shields were made of hide or wood, often reinforced with metal, and could be round, oblong, or rectangular. As armies developed, soldiers carried matching shields to link together for fighting in formations, such as those used by Assyria (2500 B.C.). A soldier's body armor complemented his shield. Heavy infantry carried larger shields than did skirmishers, cavalry carried smaller shields, and bowmen often carried none. Modern riot police carry plastic shields for protection.


Metal grounded cover used to protect a wire, component or piece of equipment from stray magnetic and/or electric fields.


Military Dictionary: shielding
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(DOD, NATO) 1. Material of suitable thickness and physical characteristics used to protect personnel from radiation during the manufacture, handling, and transportation of fissionable and radioactive materials. 2. Obstructions which tend to protect personnel or materials from the effects of a nuclear explosion.

Word Tutor: shield
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pronunciation

IN BRIEF: To protect or defend. Also: A badge.

pronunciation Children should shield themselves from the harsh rays of the sun.

Wikipedia: Shield
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A shield is a protective device, meant to intercept attacks, either by stopping projectiles such as arrows or by glancing a blow to the side of the shield-user. Shields vary greatly in size, ranging from large shilds that protect the user's entire body to small shields that are mostly for use in hand-to-hand combat. Shields also vary a great deal in thickness; whereas some shields were made of thick wooden planking, to protect soldiers from spears and crossbow bolts, other shields were thinner and designed mainly for glancing blows away (such as a sword blow). In prehistory, shields were made of wood, animal hide, or wicker. In antiquity and in the Middle Ages, shields were used by footsoldiers and mounted soldiers. Even after the invention of gunpowder and firearms, shields continued to be used. In the 18th century, Scottish clans continued to use small shields, and in the 19th century, some non-industrialized peoples continued to use shields (e.g. Zulu warriors). In the 20th and 21st century, shields are used by military and police units that specialize in anti-terrorist action, hostage rescue, and siege-breaching. The term often refers to a device that is held in the hand/arm, as opposed to an armoured suit or a bullet proof vest.

A modern counterterrorism officer (in the right-most part of the scene) uses a bulletproof shield to advance towards a dangerous location.



Contents

Prehistory and antiquity

Statue showing a Gallic shield with a butterfly boss.

The oldest form of shield was a protection device used to block attacks by hand weapons, such as swords, axes and maces or missiles like spears and arrows. Shields have varied greatly in construction over time and place. Sometimes shields were made of metal, but wood or animal hide construction was much more common; wicker and even turtle shells have been used. Many surviving examples of metal shields are generally felt to be ceremonial rather than practical, for example the Yetholm-type shields of the Bronze Age or the Iron Age Battersea shield.The shield was used to make the Greek Phalanx formation.

Size and weight varied greatly, lightly armored warriors relying on speed and surprise would generally carry light shields that were either small or thin. Heavy troops might be equipped with large heavy shields that could protect most of the body. Many had a strap called a guige that allowed it to be slung over the user's back when not in use or on horseback. During the 14th-13th century BC, the Sards or Shardana, working as mercenaries for the Egyptian pharaoh Ramses II, utilized either large or small round shields against the Hittites. The Ancient Greek hoplites used a round, bowl-shaped wooden shield called an aspis. Examples of German wooden shields c350 BC - 500 AD survive from Weapons sacrifices in Danish bogs.

The heavily armored Roman legionaries carried large shields (scuta) that could provide far more protection, but made swift movement a little more difficult. The scutum originally had an oval shape, but gradually the curved tops and sides were cut to produce the familiar rectangular shape most commonly seen in the early Imperial legions. Famously, the Romans used their shields to create a tortoise-like formation called a testudo in which entire groups of soldiers would be enclosed in an armoured box to provide protection against missiles. Many ancient shield designs featured incuts of one sort of another. This was done to accommodate the shaft of a spear, thus facilitating tactics requiring the soldiers to stand close together forming a wall of shields.

Middle Ages

Chorikov The Siege of Smolensk by the Poles.jpg

In the early European Middle Ages, kite shields were commonly used; these were rounded at the top and tapered at the bottom. They were easily used on horseback and allowed easier leg movement when dismounted. As personal body armour improved, knight's shields became smaller, leading to the familiar heater shield style. Both kite and heater style shields were made of several layers of laminated wood, with a gentle curve in cross section. The heater style inspired the shape of the symbolic heraldic shield that is still used today. Eventually, specialised shapes were developed such as the bouche — which had a lance rest cut into the upper corner of the lance side, to help guide it in combat or tournament.Free standing shields called pavises, which were propped up on stands, were used by medieval crossbowmen who needed protection while reloading.

Sword and buckler combat, plate from the Tacuinum Sanitatis illustrated in Lombardy, ca. 1390.

In time, some armoured foot knights gave up shields entirely in favour of mobility and two-handed weapons. Other knights and common soldiers adopted the buckler (origin of the term "swashbuckler"[1]). The buckler is a small round shield, typically between 8 and 16 inches (20-40 centimeters) in diameter. The buckler was one of very few types of shield that were usually made of metal. Small and light, the buckler was easily carried by being hung from a belt; it gave little protection from missiles and was reserved for hand-to-hand combat. The buckler continued in use well into the 16th Century.

Nias Ceremonial Shield

In Italy, the targa, parma and rotella were utilized by common people, fencers and even knights. The development of plate armour made shields less and less common as plate armour eliminated the need for a shield. Lightly armoured troops continued to use shields after men-at-arms and knights ceased to use them. Shields continued in use even after gunpowder powered weapons made them essentially obsolete on the battlefield. In the 18th Century, the Scottish clans used a small, round shield called a targe that was partially effective against the firearms of the time although it was arguably more often used against British infantry bayonets and cavalry swords in close-in fighting.

In the 19th Century, non-industrial cultures with little access to guns were still using shields. Zulu warriors carried large lightweight shields made from a single ox hide supported by a wooden spine, these were called Ishlangu.[2] This was used in combination with a short spear (assegai) and/or club. Although the size of shield would vary between personal preference and role, most were very thin compared to common belief (a misconception aided by the depiction of heavy shields in popular films). When used in fighting, shields were best to take advantage of causing glancing blows. By deflecting a sword blow to the side, rather than blocking it head on, the attacker may become open to a counterattack with a fast weapon. This method allowed the shield to be lighter and easily wielded, while reducing the amount of energy and risk of injury for the wielder.


Modern era

Riot shields

A row of riot police using riot shields to protect themselves from protesters

Shields for protection from armed attack are still used by many police forces around the world. These modern shields are usually intended for two broadly distinct purposes. The first type, riot shields, are used for riot control and can be made from metal or synthetics, such as Lexan or Mylar. These typically offer protection from relatively large and low velocity projectiles, such as rocks and bottles as well as blows from fists or clubs. Synthetic riot shields are normally transparent, allowing full use of the shield without obstructing vision. Similarly, metal riot shields often have a small window at eye level for this purpose. These riot shields are most commonly used to block and push back crowds when the users stand in a wall, and to protect against shrapnel, projectiles, molotov cocktails, and during hand-to-hand combat. The second type of modern police shield, which is used by SWAT teams, hostage rescue teams, and antiterrorism units, is typically manufactured from advanced synthetics such as kevlar and are designed to be bulletproof, or at least bullet resistant. These are typically employed by specialist police, such as SWAT teams, in high risk entry and siege scenarios, but are also used on a daily basis in many areas of the US.

A large, bulletproof shield is shown on the right-hand side of this collection of US Marshals' tools; note the bulletproof window, the two firing ports, and the large "US MARSHAL" sign, to indicate that the user is a law enforcement officer.

Non-martial applications

Many non-martial devices also employ shielding of a kind--not usually a single device worn on an arm but various protective plates or other insulation positioned where needed. Space craft have heat shields to ensure a safe re-entry. Electronics uses shielding to reduce electrical noise and crosstalk between signals. People and systems that must work in the presence of ionizing radiation are protected with shielding. Movie studio Warner Bros. uses a shield emblazoned with WB as its logo. The Looney Tunes cartoons, released through Warner Bros., open with the WB shield zooming through concentric circles.

Fictional use

Science fiction writers have imagined many futuristic protections they often call "shields," usually using force fields. These include personal shields, as in the Dune series, or larger ones for spacecraft as in Star Trek. In the Star Trek movies and TV shows, the deployment of "force field"-type shields is used to protect the spaceship from hostile enemy fire, usually in the form of beam weapons. Due to the immense energy requirements of these shields, the ship commander must be judicious in deciding when to use the shields; excessive use of the shields can deplete the ship's energy stores and make the use of other systems (e.g., beam weapons or thrusters) infeasible.





References

  1. ^ "The Sussex Rapier School". Hadesign.co.uk. http://www.hadesign.co.uk/SRS/html/buckler.htm. Retrieved 2008-12-26. 
  2. ^ "Zulu Shield (Longo)". Rrtraders.com. http://www.rrtraders.com/Shields/zuluw.htm. Retrieved 2008-12-26. 

Literature

  • Schulze, André(Hrsg.): Mittelalterliche Kampfesweisen. Band 2: Kriegshammer, Schild und Kolben. - Mainz am Rhein. : Zabern, 2007. - ISBN 3-8053-3736-1

External links

See also


Translations: Shield
Top

Dansk (Danish)
n. - skjold, værn, skærm, våbenskjold
v. tr. - beskytte, værne, afskærme, skærme, dække over
v. intr. - afskærme

Nederlands (Dutch)
schild, bescherming, beschermen, afschermen

Français (French)
n. - (Mil) bouclier, (Hérald) écusson, (fig) protection, bouclier, (Tech) écran de protection, pare-balles, bouclier (d'avancement), (US) insigne, (Zool) carapace
v. tr. - (gén) protéger (de), (fig) couvrir (la vérité), donner asile
v. intr. - protéger, (fig) agir/servir de bouclier

Deutsch (German)
n. - Schild, Schutz, Schutzschirm, Trophäe
v. - decken, schützen

Ελληνική (Greek)
n. - ασπίδα, θυρεός, προστατευτικός θώρακας, αθλητικό τρόπαιο, (στρατ.) θωράκιο πυροβόλου, (μτφ.) προστασία, υπερασπιστής, προστατευτικό περίβλημα, (ΗΠΑ, καθομ.) αστυνομικό σήμα
v. - προασπίζω, προστατεύω, θωρακίζω

Italiano (Italian)
proteggere, scudo

Português (Portuguese)
n. - escudo (m), brasão, defesa (f)
v. - defender, escudar

Русский (Russian)
щит, защита, защитник, подмышник, значок полицейского

Español (Spanish)
n. - escudo, blindaje, capa protectora, pantalla protectora
v. tr. - proteger, blindar, escudar, tapar, amparar, resguardar, defender
v. intr. - actuar o servir de escudo

Svenska (Swedish)
n. - sköld, skydd, värn, skyddsplåt, skärm
v. - skydda, värna

中文(简体)(Chinese (Simplified))
盾, 庇护者, 保护者, 防护物, 保护, 庇护, 保卫, 包庇, 起保护作用

中文(繁體)(Chinese (Traditional))
n. - 盾, 庇護者, 保護者, 防護物
v. tr. - 保護, 庇護, 保衛, 包庇
v. intr. - 起保護作用

한국어 (Korean)
n. - 방패, 보호물, 경관의 배지
v. tr. - (불법적으로) 숨겨주다, 보호하다, 가리다
v. intr. - 방패가 되다, 보호하다, 지키다

日本語 (Japanese)
n. - 盾, 防御物, 盾形の物, 盾形記章
v. - 保護する, かばう, 覆う

العربيه (Arabic)
‏(الاسم) ترس, , وقاء, حجاب واق (فعل) يحجب عن ألانظار, يقي, يستر‏

עברית (Hebrew)
n. - ‮מגן (מ קמוצה), חלק גדול ונוקשה של קליפת כדור-הארץ (גיאולוגיה)‬
v. tr. - ‮הגן על, שמר, חיפה על‬
v. intr. - ‮שימש כמגן‬


 
 
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Lisnaskea
Shiell (family name)
scutiform

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