suck

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To draw (liquid) into the mouth by movements of the tongue and lips that create suction.
2. v. To draw in by establishing a partial vacuum: a cleaning device that sucks up dirt.
3. v. To draw in by or as if by a current in a fluid.
4. v. To draw or pull as if by suction: teenagers who are sucked into a life of crime.
5. v. To draw nourishment through or from: suck a baby bottle.
6. v. To hold, moisten, or maneuver (a sweet, for example) in the mouth.
7. v. Vulgar Slang To perform fellatio on.
8. v. To draw something in by or as if by suction: felt the drain starting to suck.
9. v. To draw nourishment; suckle.
10. v. To make a sound caused by suction.
11. v. Vulgar Slang To be disgustingly disagreeable or offensive.
12. n. The act or sound of sucking.
13. n. Suction.
14. n. Something drawn in by sucking.
15. suck in To take advantage of; cheat; swindle.
16. suck up Slang To behave obsequiously; fawn.

Century Dictionary and Cyclopedia

1. To draw into the mouth by action of the lips and tongue which produces a partial vacuum.
2. To draw something from with the mouth; specifically, to draw milk from.
3. To draw in or imbibe by any process; inhale; absorb: usually with in, out, away, etc.: as, to suck in air; a sponge sucks in water.
4. To draw or drain.
5. To draw in, as a whirlpool; swallow up; in-gulf.
6. To draw in or obtain by fraudulent devices; soak.
7. To cheat; deceive; take in.
8. To draw fluid into the mouth; draw by producing a vacuum, as with a tube.
9. To draw milk from a teat: said of the young of a mammal.
10. To draw air when the water is low or the valve imperfect: said of a pump.
11. n. Suction by the mouth or in any way; the act of sucking; a sucking force.
12. n. Nourishment drawn from the breast.
13. n. A small draught.
14. n. Rum or liquor of some kind.
15. n. Same as sucket, 1.
16. n. Juice; succulence.

Wiktionary

1. n. Canada A weak, self-pitying person; a person who won't go along, especially out of spite; a crybaby or sore loser.
2. n. A sycophant, especially a child.

GNU Webster's 1913

1. v. To draw, as a liquid, by the action of the mouth and tongue, which tends to produce a vacuum, and causes the liquid to rush in by atmospheric pressure; to draw, or apply force to, by exhausting the air.
2. v. To draw liquid from by the action of the mouth; ; specifically, to draw milk from (the mother, the breast, etc.) with the mouth.
3. v. To draw in, or imbibe, by any process resembles sucking; to inhale; to absorb.
4. v. To draw or drain.
5. v. To draw in, as a whirlpool; to swallow up.
6. v. To draw, or attempt to draw, something by suction, as with the mouth, or through a tube.
7. v. To draw milk from the breast or udder.
8. v. To draw in; to imbibe; to partake.
9. v. colloq. To be objectionable, of very poor quality, or offensive.
10. n. The act of drawing with the mouth.
11. n. That which is drawn into the mouth by sucking; specifically, mikl drawn from the breast.
12. n. colloq. A small draught.
13. n. obsolete Juice; succulence.

WordNet 3.0

1. v. provide sexual gratification through oral stimulation
2. v. draw into the mouth by creating a practical vacuum in the mouth
3. n. the act of sucking
4. v. take in, also metaphorically
5. v. draw something in by or as if by a vacuum
6. v. be inadequate or objectionable
7. v. attract by using an inexorable force, inducement, etc.
8. v. give suck to