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1. Bar, used as a slightly formal preposition meaning 'except', has been in use since the 18th century. In current use it is often followed by a number (or none):

My sister-in-law for whom I probably care more than I care for anyone in the world bar one other—Penelope Lively, 1983

The best detection expert I know, bar none—Ruth Rendell, 1983.

It is also used in the idiom all over bar the shouting, when an outcome is all but assured; and in giving the odds in racing (e.g. 33-1 bar the rest).

2. Barring, which is attested much earlier (15th century), is also still used in the general meanings, and collocates regularly with words expressing misfortune or reversal:

Barring accidents, we should win another Grand Slam—Rugby World and Post, 1991

The young working-class man in industrial employment could expect his income to reach its peak in early manhood and stay constant thereafter, barring disasters such as unemployment.—J. Weeks, 1992.

Notable among the few positive collocates of barring are miracles and similar manifestations:

Barring a miracle or divine intervention, Sligo Rovers' season will be bereft of cups or league accolades—Sligo Weekender, 2004.

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A c.g.s. unit of pressure equal to 10⁶ dynes per square centimetre or 10⁵ pascals (approximately 750 mmHg or 0.987 atmosphere). The millibar (100 Pa) is commonly used in meteorology.

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[Etymology: barometer] pressure (Metric) Defined to be the decimal power of standard metric units closest to the typical atmospheric pressure at Earth's surface = 10⁵Pa = 100 kPa ( ¹/_1.01325 std atmos, 14.503 77~ p.s.i.), originally defined under metric-c.g.s. as 10⁶ dyn·cm^-2 (but also interpreted as 1 dyn·cm^-2 in the USA into the 1920s).
[Glazebrook R. T. (ed.) Dictionary of Applied Physics, Vol. 1: Mechanics, Engineering, Heat (London: Macmillan, 1922)] Introduced in 1911,
[Bjerknes V. Dynamic Meteorology and Hydrography (Washington: 1911)] the bar competed for decades with the more visible but problematic mmHg,
[Denne E. Nature Vol. 156, 146-7 (1945)] which is still used for many pressure readings. The 1978 decision of the CIPM considering it acceptable to continue to use the bar with the SI still stands. However, there is no official acceptance of it being abbreviated to its initial letter or otherwise, hence no official acceptance of mb for millibar or μb for microbar; the correct forms are mbar and μbar. Usage for atmospheric pressure is normally in the form of millibars, even when exceeding 1 000 mbar. Since the millibar equals 100 Pa, i.e. the hectopascal, this, in the symbolic form hPa, is often used in place of the millibar, producing such quaint expressions as 800 hPa for what is 80 kPa.

The term barye was introduced for this unit prior to bar. Both bar and barye have also been used, most notably in acoustics, for the fully coherent c.g.s. unit of 1 dyn·cm^-2, i.e. what is correctly the microbar (and called also the barad).

A distinct old metric unit for atmospheric pressure was the torr.

noun

1. A relatively long, straight, rigid piece of metal or other solid material: bloom, rod, shaft, slab, stick. See thing.
2. Something that impedes or prevents entry or passage: barricade, barrier, block, blockage, clog, hamper, hindrance, hurdle, impediment, obstacle, obstruction, snag, stop, traverse, wall. See help/harm/harmless, open/close.
3. A judicial assembly: court, tribunal. See law.

verb

1. To shut in with or as if with bars: confine, lock, wall. See free/unfree.
2. To stop or prevent passage of: block, dam, impede, obstruct. Idioms: bestandin the way of. See open/close.
3. To keep from being admitted, included, or considered: count out, debar, eliminate, except, exclude, keep out, rule out, shut out. See include/exclude.

n

Definition: barrier; blockage
Antonyms: advantage, aid, help

v

Definition: prohibit
Antonyms: advocate, allow, open, permit

v

Definition: secure, usually with a length of material
Antonyms: loosen, open, unfasten

1. On a gently sloping coastline, a submarine accumulation of marine sediment, which may be exposed at low tide, most often formed where steep, destructive waves break, moving landwards outside the bar and seawards inside it. Such bars can be called break-point bars, and are very common along low coasts, such as the German Baltic. The crest of the bar generally runs parallel to the coast, but may extend across an estuary or a bay, when it is known as a bay bar. Some bay bars entirely enclose the inlet and a lagoon may then form on the landward side. The formation of offshore bars, which are located further out to sea, is thought to result from the breaking of larger waves, which erode the sea bed and throw up material ahead of them to form ridges.

2. In a glacial trough, such as the Nant Ffrancon of North Wales, a transverse rocky barrier.

3. Within a river, a deposit of alluvium which may form temporary islands. Deposition takes place in areas that are away from the threads of maximum velocity and turbulence. It can begin with two particles coming to rest so that the upstream particle shields the downstream one. This self-accentuating process creates the traction clog which will eventually become a bar.

Alternating bars develop as patches of alluvium, often regularly spaced, along alternate sides of a straight channel.

Braid bars form within a channel and cause the river to split up. Braid bars are roughly diamond shaped and are generally aligned along the course of the channel. Point bars form on the inner curves of a meandering river where the discharge is low.

A vertical line (often called bar-line) drawn through the staff to mark off metrical units; hence also the units so marked off. In American usage, the term ‘measure’ is usually preferred to ‘bar’. Bar-lines are found occasionally in early polyphonic music, but first appear regularly in tablature for the keyboard or lute. They appear in solo parts and partbooks from the beginning of the 17th century, but bar-lines in early sources do not always immediately precede the main accented beat, as they do in later music.

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1. One of the thin strips of wood or metal forming the several divisions of a sash or a

banner vane

baptistery

bar, 1

wood panel door, employed to receive the glass.
2. A solid metal product having a square, rectangular, or other simple symmetrical cross-sectional shape and a length much greater than its width.
3. A counter over which liquor and other beverages are served; may be equipped with a footrail if stools are not provided.
4. A steel reinforcing bar.
5. A unit of pressure equal to 10⁵ pascals, 10⁵ newtons per square meter, or 10⁶ dynes per square centimeter.
6. One of a number of thin strips of wood or metal forming the several divisions of a window sash or a wood-paneled door.
7. Same as iron mantel, 3.

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Unit of pressure equivalent to 0.986923 atm, 100, 000 N m⁻² (pascals), or 1, 000, 000 dynes m⁻².

In procedure, barrier to the relitigating of an issue. Where causes of action are the same, final judgment on the merits in the first action is a complete prohibition to the second action. 179 S.W. 2d 441, 444. Issues which have been decided by a court become bars in further litigation as between the parties to the decision. A bar operates to deny a party the right or privilege of re-challenging issues in subsequent litigation. The prevailing party in a lawsuit can use his favorable decision to prohibit retrial of the cause of action. See plea [plea in bar].
A particular position in the courtroom is also termed a bar, hence, the defendant standing before the judge is sometimes called the “prisoner at bar.” The complete body of attorneys is called “the bar ” because they are the persons privileged to enter beyond the bar that separates the general courtroom audience from the bench of the judge. The case at bar refers to the particular action before the court. See collateral estoppel, double jeopardy, estoppel, merger, res judicata.

To convert from bars to:

atmospheres, multiply by .9869.
dynes/sq. cm, multiply by 1000000.
kgs/sq. meter, multiply by 10200.
pounds/sq. ft, multiply by 2089.
pounds/sq. in, multiply by 14.5.

Convert:  Into:  atmospheres dynes/sq. cm kgs/sq. meter pounds/sq. ft pounds/sq. in

Result:

(DOD) A submerged or emerged embankment of sand, gravel, or mud created on the sea floor in shallow water by waves and currents. A bar may be composed of mollusk shells.

i. A metric unit of measurement of pressure equal to 1 atm in the standard atmosphere. It is equal to 100,000 (106 ) dyn/cm2 , 1015 N/m2 , 1000 mb, or 29.92 in. of mercury. A millibar (mb) is 1/1000 of a bar.
ii. The horizon bar of an artificial horizon or attitude indicator.

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noun
noun, Brit dated

A pound; esp. in phr. half a bar, ten shillings. (1911 — 58).

[Prob. from earlier sense, ingot (of gold, etc.).]

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a unit of pressure temporarily approved for use with SI units. 1 bar = 10⁵ Pa = 10⁵ Nm⁻².

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1. a cgs unit of pressure, being the pressure exerted by 105 Newtons per square cm (106 dynes per square cm).
2. a metal strip that is attached to the metal arch on each side of a saddle and constitutes its skeleton. The attachments for the stirrup leathers are anchored to the bars.
3. a term for describing the humerus.

• hoof b. — the reflection of the wall of the horse's hoof at the heel, with one bar on each side of the frog. They contribute to the spreadability of the heels but give them protection against excessive contact with the ground surface. May be erroneously cut back by an overzealous blacksmith.
• b. pad — a pad, usually of leather, fitted between the shoe and the hoof of a horse so as to protect the sole and bars of the foot.
• b. shoe — a special horseshoe with a bar connecting the two heels of the shoe so as to make a full circle. Designed for use in horses whose heels are likely to be injured by too frequent contact of the heel with the ground surface.
• walking b. — a reinforcement placed at the bottom of a cast which allows weight to be transferred from the foot to the upper part of the cast. Used most often in casts for large animals.

n

A metal segment of greater length than width. See also bar, connector.

For a list of words related to bar, see:

• Building and Machine Parts - bar: straight supporting rod
• Shovels and Digging and Lifting Tools - bar: long, straight, rigid piece of metal for lifting or prying
• Tables and Desks - bar: counter at which food and beverages are served
• Cookies
• Courts, Legal Bodies, and the Law - bar: entire body of lawyers and counselors-at-law
• Harmony, Melody, and Structure - bar: measure of set number of beats
• Bars, Bar Tools, and Habitués - bar: place where drinks are served across a long counter; such a counter
• Prepositions
• Drug Names and Forms - bar: Slang. block of pressed marijuana

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See words rhyming with "bar."

  See crossword solutions for the clue Bar.

Dansk (Danish)
1.
n. - stang, søjle, stykke, barre, skranke, bjælke
v. tr. - spærre, sætte for
prep. - undtagen, bortset fra

idioms:

• bar chart    søjlediagram
• bar code    stregkode
• bar from    udelukke fra
• bar none    uden undtagelse
• bar room    barlokale
• behind bars    bag tremmer
• no holds barred    alle kneb gælder

2.
n. - advokatbestalling

3.

idioms:

• bar mitzvah    bar mitzvah

Nederlands (Dutch)
bar, advocatuur, maatstreep, reep, staaf, uitsluiting (b.v. op grond van ras), tralie, beklaagdenbank, rechtbank, drempel, streep, strip, band, wad, grendel, afsluiting, hindernis, algemene norm, eenheid van atmosferische druk, baar, behalve, buitensluiten, vergrendelen, verhinderen, versperren, verbieden, strepen, maatstrepen aangeven

Français (French)
1.
n. - barre, planche, lingot, tablette (de chocolat), barreau, bâcle (d'une porte), (Sport) barre, perche, (Aut) barre (antiroulis), barre (d'une rivière, d'un port), (fig) obstacle, raie (de lumière), bande (couleur), (Jur) barreau, café, bar, bistrot, buvette, comptoir, (Comm) rayon, (Mus) mesure, (GB, Mil) barrette, (US, Mil) galon, burelle (herbe), barre (de métal)
v. tr. - barrer, munir de barreaux, exclure de, défendre, interdire, (Jur) se prescrire, rayer
prep. - sauf, excepté, à l'exception de, à part

idioms:

• bar chart    tableau
• bar code    code-barre
• bar from    exclure de, interdire de
• bar none    (être) ouvert à tout venant
• bar room    salle de bar
• behind bars    (être) derrière les barreaux
• no holds barred    (être) sans restrictions

2.
n. - bar (unité de pression atmosphérique)

3.

idioms:

• bar mitzvah    bar mitzvah, majorité religieuse d'un enfant mâle juif

Deutsch (German)
1.
n. - Stab, Barren, Gitterstab, Stange, Streifen, Gericht, Anwaltschaft, Sperre, Riegel, Theke, Bar, Sandbank, Takt
v. - aussperren, hindern, sperren, verriegeln
prep. - außer

idioms:

• bar chart    Stabdiagramm
• bar code    Strichcode
• bar from    ausschließen, aussperren
• bar none    ohne Einschränkung
• bar room    Bar
• behind bars    hinter Gitter
• no holds barred    alles ist erlaubt

2.
n. - (Phys) Bar

3.

idioms:

• bar mitzvah    Bar-Mizwa (religiöse Mündigkeit im Judentum)

Ελληνική (Greek)
n. - ράβδος, σιδηρόβεργα, κάγκελο, μπάρα, φραγμός, μπαρ, δικηγορικός σύλλογος, Δικαστικό ή Δικηγορικό Σώμα, πλάκα (σαπούνι, σοκολάτα), σιρίτι, δίζυγο, μοχλός, λοστός, (νομικό) κώλυμα
v. - φράζω, κλείνω, εμποδίζω, προλαμβάνω, αποκλείω (πιθανότητα κ.λπ.), απαγορεύω, διαγραμμίζω
prep. - εκτός, παρεκτός

idioms:

• bar chart    ραβδόγραμμα
• bar code    γραμμοκώδικας
• bar from    αποκλείω από
• bar mitzvah    τελετή θρησκευτικής ενηλικίωσης εβραιόπουλου
• bar none    μηδενός εξαιρουμένου, ανεξαιρέτως
• bar room    αίθουσα μπαρ/ποτοπωλείου
• behind bars    στη φυλακή
• no holds barred    χωρίς περιορισμούς

Italiano (Italian)
eccetto, escludere, impedire, sbarrare, tribunale, bar, sbarra, lingotto, striscia, banco di sabbia, catenaccio, avvocatura, barriera, banco, millibar

idioms:

• bar chart    codice dell'ordine degli avvocati
• bar code    codice a barre
• bar from    escludere
• bar mitzvah    maggiore età ebraica
• bar none    senza eccezioni
• bar room    locale del bar
• behind bars    dietro le sbarre
• horizontal bar    sbarra
• no holds barred    senza restrizioni
• space bar    tasto spaziatore

Português (Portuguese)
n. - barra (f), tranca (f), bar (Fís.), ritmo (m), tribunal (m), advocacia (f)
v. - trancar, excluir, proibir
prep. - exceto

idioms:

• bar code    código (m) de barras
• bar from    proibir alguém de entrar em algum lugar ou fazer alguma coisa
• bar mitzvah    bar mitzvah (Rel.)
• bar none    sem termos de comparação
• bar room    bar (m)
• behind bars    preso, atrás das grades
• coffee bar    cafeteria (f)
• horizontal bar    barra (f) fixa
• no holds barred    sem impedimento
• pinch bar    alavanca (f)
• space bar    barra (f) de espaço

Русский (Russian)
исключать, препятствовать, отстранять, суд, адвокатура, стержень, арматура, плитка (шоколада), слиток, бар, бар (единица давления), такт (в музыке)

idioms:

• bar code    штриховой код
• bar from    запретить
• bar mitzvah    бармицва
• bar none    без исключения
• bar room    бар
• behind bars    за решеткой
• coffee bar    кафе
• horizontal bar    перекладина
• no holds barred    без ограничений
• pinch bar    лом с отогнутым концом
• space bar    кнопка "пробел"

Español (Spanish)
1.
n. - salón, barra, barrote, lingote, varilla, pastilla, tira, cinta, taberna, bar, café, banco de arena, bajío, palanca, tranca, obstáculo, barrera, mostrador, bario
v. tr. - excluir, eliminar, impedir, prevenir, bloquear
prep. - excepto, con excepción de, menos, salvo

idioms:

• bar chart    gráfico de barras
• bar code    código de barras
• bar from    excluir, eliminar
• bar none    sin excepción
• bar room    bar
• behind bars    entre rejas, encarcelar
• no holds barred    todo vale

2.
n. - tribunal, tribunal de justicia, foro, abogacía

3.

idioms:

• bar mitzvah    bar mitzvah, muchacho judío de 13 años que asume responsabilidades religiosas

Svenska (Swedish)
n. - stång, spak, ribba, barr, bom, regel, takt, taktstreck, hinder, bar, bardisk, skrank
v. - bomma till (för, igen), spärra in
prep. - utan, in blanko

中文（简体）(Chinese (Simplified))
1. 棒, 条, 闩, 横杠, 条状物, 障碍, 限制, 闩住, 阻塞, 封锁, 阻拦, 除...外

idioms:

• bar chart    柱形图表, 长条图, 条线图
• bar code    计算机条码
• bar from    不准
• bar none    无一例外地, 没有例外地
• bar room    酒吧间
• behind bars    在监狱服刑
• no holds barred    不受清规戒律约束的, 没有限制的, 倾全力的

2. 酒吧, 律师界

3. 条形备用地址寄存器

idioms:

• bar mitzvah    犹太男孩成人仪式

中文（繁體）(Chinese (Traditional))
1.
n. - 棒, 條, 閂, 橫杠, 條狀物, 障礙, 限制
v. tr. - 閂住, 阻塞, 封鎖, 阻攔
prep. - 除...外

idioms:

• bar chart    柱形圖表, 長條圖, 條線圖
• bar code    電腦條碼
• bar from    不准
• bar none    無一例外地, 沒有例外地
• bar room    酒吧間
• behind bars    在監獄服刑
• no holds barred    不受清規戒律約束的, 沒有限制的, 傾全力的

2. 條形備用地址寄存器

idioms:

• bar mitzvah    猶太男孩成人儀式

3.
n. - 酒吧, 律師界

한국어 (Korean)
1.
n. - 막대기, 장애, 술집, 법정
v. tr. - ~에 빗장을 질러 잠그다, ~을 방해하다, ~을 제외하다
prep. - ~을 제외하고는

idioms:

• bar from    제외하다

2.
n. - 모기장

3.

idioms:

• bar mitzvah    13세 남자의 성인식, 성인식을 받은 소년

日本語 (Japanese)
n. - 棒, 棒状のもの, 横木, 格子, 砂州, 障害, 酒場, 軽食堂, 縞, 弁護士, 法廷, 小節, かんぬき, 柵
v. - …にかんぬきをかける, ふさぐ, 妨げる, 縞模様を付ける, 禁じる, 閉め出す, 除外する
prep. - 除いて

idioms:

• bar chart    棒グラフ
• bar code    バーコード
• bar from    妨げる, 除外する
• bar mitzvah    バルミツバー
• bar none    例外なく
• bar room    酒場
• singles bar    独身男女向きのバー

العربيه (Arabic)
‏(الاسم) عارضه, قضيب (حديد), حاجز, مانع, عائق, مقطع موسيقي, محكمه, قضاء, مشرب, حانه (فعل) حال, منع, سد (حرف جر) ما عدا, باستثناء‏

עברית (Hebrew)
n. - ‮מוט, בריח, מחסום, פס, עיטור, שרטון, מחיצה, באר, פאב, מסבאה, דלפק, סורג ובריח, מאסר, שטח סגור בבית-משפט לאסיר, מוסכמה ציבורית, תביעה משפטית לאסור פעולה, מחלקה בחנות כל-בו, מזנון למשקאות במסעדה, יחידה למדידת לחץ - אטמוספרה אחת בקירוב‬
v. tr. - ‮סגר, נעל, חסם, אסר, שלל, סימן בפסים‬
prep. - ‮חוץ מ-,‬
n. - ‮יחידת-כוח - מיליון דין לס"מ מרובע‬
bar mitzvah - ‮בר מצווה‬

Some good "bar" pages on the web: