light

1. 1. Of relatively little weight; not heavy: a light load.
   2. Of relatively little weight for its size or bulk: Balsa is a light wood.
   3. Of less than the correct, standard, or legal weight: a light pound.
2. Exerting little force or impact; gentle: a light pat.
3. Indistinct; faint: light print that I could barely make out.
4. 1. Of little quantity; scanty: light snow.
   2. Consuming or using relatively moderate amounts; abstemious: a light eater; a light smoker.
   3. Not harsh or severe: gave the offender a light sentence.
5. Demanding little exertion or effort; not burdensome: light household tasks.
6. Having little importance; insignificant: light, idle chatter.
7. Intended primarily as entertainment; not serious or profound: a light comedy.
8. Free from worries or troubles; blithe: a light heart.
9. Characterized by frivolity; silly or trivial.
10. Liable to change; fickle.
11. Mildly dizzy or faint: felt light in the head.
12. Lacking in ethical discrimination.
13. Moving easily and quickly; nimble: The dancer was light and graceful.
14. Designed for ease and quickness of movement; having a relatively slim structure and little weight: light aircraft.
15. Designed to carry relatively little weight: a light truck.
16. Carrying little equipment or armament: light cavalry; light tanks.
17. Requiring relatively little equipment and using relatively simple processes to produce consumer goods: light industry.
18. Easily awakened or disturbed: a light sleeper.
19. 1. Easily digested: a light supper.
    2. Having a spongy or flaky texture; well-leavened: light pastries.
20. Having a loose, porous consistency: light soil.
21. Containing a relatively small amount of a potentially harmful ingredient, such as alcohol, fat, or sodium: light beer; light mayonnaise.
22. Linguistics.
    1. Of, relating to, or being a syllable ending in a short vowel or a short vowel plus a consonant.
    2. Of, relating to, or being a vowel or syllable pronounced with little or no stress.

1. In a light manner; lightly.
2. With little weight and few burdens: traveling light.

1. To get down, as from a vehicle or horse; dismount.
2. To descend to the ground after flight; land.
3. To come upon one unexpectedly: Misfortune lighted upon him.
4. To come upon by chance or accident. Used with on or upon: lit on the perfect solution to the problem.

light into Informal.

1. To attack verbally or physically; assail.

1. To leave hastily; run off.

go light on

1. To treat casually or gingerly.

[Middle English, from Old English lēoht, līht.]

adjective

1. Having little weight; not heavy: lightweight, weightless. Idioms: light as a feather. See heavy/light.
2. Of small intensity: gentle, moderate, slight, soft. See strong/weak.
3. Requiring little effort or exertion: easy, moderate. See easy/hard.
4. Amusing but essentially empty and frivolous: frothy. See surface/depth.
5. Free from care or worry: blithe, carefree, debonair, lighthearted. See careful/careless, happy/unhappy.
6. Marked by an absence of conventional restraint in sexual behavior; sexually unrestrained: easy, fast, libertine, loose, wanton, whorish. See sex/asexual.

verb

To come to rest on the ground: alight¹, land, set down, settle, touch down. See move/halt.

phrasal verb - light into

To set upon with violent force: aggress, assail, assault, attack, beset, fall on (or upon), go at, have at, sail into, storm, strike. Informal pitch into. See attack/defend.

phrasal verb - light on (or upon)

To find or meet by chance: bump into, chance on (or upon), come across, come on (or upon), find, happen on (or upon), run across, run into, stumble on (or upon), tumble on. Archaic alight on (or upon). Idioms: meet up with. See meet.

Idioms beginning with light:
light heart
light into
light a fire under
light as a feather
light dawned, the
lighten up
lightning
lightning never strikes twice in the same place
light on
light out

See also begin to see daylight (see the light of day); bring to light; come to light; go light on; green light; heavy (light) heart; hide one's light; in a good (bad) light; in the cold light of day; in the light of; lace (light) into; leading light; make light of; many hands make light work; once over lightly; out cold (like a light); see the light; shed light on; sweetness and light; travel light; trip the light fantastic.

The oldest British Spiritualist weekly, official organ of the London Spiritualist Alliance, founded in 1881 by Dawson Rogers and the Rev. Stainton Moses. Successive editors were E. W. Wallis and David Gow. It is now published quarterly as the journal of the College of Psychic Studies, London, 16 Queensberry Place, South Kensington, London SW7 2EB, England.

Sources:

Berger, Arthur S., and Joyce Berger. The Encyclopedia of Parapsychology and Psychical Research. New York: Paragon House, 1991.

The noun has 14 meanings:

Meaning #1: (physics) electromagnetic radiation that can produce a visual sensation
  Synonyms: visible light, visible radiation

Meaning #2: any device serving as a source of illumination
  Synonym: light source

Meaning #3: a particular perspective or aspect of a situation

Meaning #4: the quality of being luminous; emitting or reflecting light
  Synonyms: luminosity, brightness, brightness level, luminance, luminousness

Meaning #5: an illuminated area

Meaning #6: a condition of spiritual awareness; divine illumination
  Synonym: illumination

Meaning #7: the visual effect of illumination on objects or scenes as created in pictures
  Synonym: lightness

Meaning #8: a person regarded very fondly

Meaning #9: mental understanding as an enlightening experience

Meaning #10: having abundant light or illumination
  Synonym: lighting
  Antonym: dark (meaning #1)

Meaning #11: public awareness

Meaning #12: brightness and animation of countenance
  Synonyms: sparkle, spark

Meaning #13: a visual warning signal

Meaning #14: a device for lighting or igniting fuel or charges or fires
  Synonyms: lighter, igniter, ignitor

The verb light has 6 meanings:

Meaning #1: make lighter or brighter
  Synonyms: illume, illumine, light up, illuminate

Meaning #2: begin to smoke
  Synonyms: light up, fire up

Meaning #3: to come to rest, settle
  Synonyms: alight, perch

Meaning #4: cause to start burning; subject to fire or great heat
  Synonym: ignite

Meaning #5: fall to somebody by assignment or lot
  Synonym: fall

Meaning #6: get off (a horse)
  Synonyms: unhorse, dismount, get off, get down

The adjective light has 26 meanings:

Meaning #1: of comparatively little physical weight or density
  Antonym: heavy (meaning #1)

Meaning #2: (used of color) having a relatively small amount of coloring agent
  Synonym: light-colored
  Antonym: dark (meaning #2)

Meaning #3: of the military or industry; using (or being) relatively small or light arms or equipment
  Antonym: heavy (meaning #3)

Meaning #4: not great in degree or quantity or number
  Antonym: heavy (meaning #2)

Meaning #5: psychologically light; especially free from sadness or troubles
  Antonym: heavy (meaning #6)

Meaning #6: characterized by or emitting light
  Antonym: dark (meaning #1)

Meaning #7: used of vowels or syllables; pronounced with little or no stress
  Synonyms: unaccented, weak

Meaning #8: easily assimilated in the alimentary canal; not rich or heavily seasoned

Meaning #9: (used of soil) loose and large-grained in consistency
  Synonyms: friable, sandy

Meaning #10: (of sound or color) free from anything that dulls or dims
  Synonyms: clean, clear, unclouded

Meaning #11: moving easily and quickly; nimble
  Synonyms: lightsome, tripping

Meaning #12: demanding little effort; not burdensome

Meaning #13: of little intensity or power or force
  Antonym: heavy (meaning #10)

Meaning #14: (physics, chemistry) not having atomic weight greater than average
  Antonym: heavy (meaning #11)

Meaning #15: weak and likely to lose consciousness
  Synonyms: faint, swooning, light-headed, lightheaded

Meaning #16: very thin and insubstantial
  Synonym: flimsy

Meaning #17: marked by temperance in indulgence
  Synonym: abstemious

Meaning #18: less than the correct or legal or full amount often deliberately so
  Synonyms: scant, short

Meaning #19: having little importance

Meaning #20: intended primarily as entertainment; not serious or profound

Meaning #21: silly or trivial
  Synonym: idle

Meaning #22: having a spongy or flaky texture; well-leavened

Meaning #23: designed for ease of movement or to carry little weight

Meaning #24: having relatively few calories
  Synonyms: diet, lite, low-cal

Meaning #25: (of sleep) easily disturbed
  Synonym: wakeful

Meaning #26: casual and unrestrained in sexual behavior
  Synonyms: easy, loose, promiscuous, sluttish, wanton

The adverb light has one meaning:

Meaning #1: with few burdens
  Synonym: lightly