vent

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A means of escape or release from confinement; an outlet: give vent to one's anger.
2. n. An opening permitting the escape of fumes, a liquid, a gas, or steam.
3. n. The small hole at the breech of a gun through which the charge is ignited.
4. n. Zoology The excretory opening of the digestive tract in animals such as birds, reptiles, amphibians, and fish.
5. n. Geology The opening of a volcano in the earth's crust.
6. n. Geology An opening on the ocean floor that emits hot water and dissolved minerals.
7. v. To express (one's thoughts or feelings, for example), especially forcefully.
8. v. To release or discharge (steam, for example) through an opening.
9. v. To provide with a vent.
10. v. To vent one's feelings or opinions.
11. v. To be released or discharged through an opening.
12. v. To rise to the surface of water to breathe. Used of a marine mammal.
13. n. A slit in a garment, as in the back seam of a jacket.

Century Dictionary and Cyclopedia

1. n. A small aperture leading out of or into some inclosed space; any small hole or opening made for passage.
2. n. Specifically— The small opening into the barrel of a gun, by which the priming comes in contact with the charge, or by which fire is communicated to the charge; a touch-hole.
3. n. The opening in the top of a barrel to allow air to pass in as the liquid is drawn out; also, the vent-peg with which the opening is stopped.
4. n. A hollow gimlet used to make an opening in a cork or barrel, in order to draw out a small quantity of liquid for sampling; a liquid-vent or vent-faucet
5. n. In molding, one of the channels or passages by which the gases escape from the mold
6. n. The flue or funnel of a chimney.
7. n. A crenelle or loophole in an embattled wall.
8. n. In steam-boilers, the sectional area of the passage for gases, divided by the length of the same passage in feet.
9. n. In musical instruments of the wood wind group, a finger-hole
10. n. The end of the intestine, especially in animals below mammals, in which the posterior orifice of the alimentary canal discharges the products of the urogenital organs as well as the refuse of digestion, as the anus of a bird or reptile; also, the anal pore of a fish, which, when distinct from the termination of the intestine, discharges only the milt or roe. See cut under Terebratulidæ.
11. n. A slit or opening in a garment.
12. n. An escape from confinement, as for something pent up; an outlet.
13. n. Utterance; expression; voice.
14. n. A discharge; an emission.
15. To let out at a vent; make an opening or outlet for; give passage to; emit; let pass.
16. To furnish with a vent; make a vent in.
17. To give utterance, expression, or publicity to; especially, to report; publish; promulgate; hence, to circulate.
18. Reflexively, to free one's self; relieve one's self by giving vent to something.
19. n. Scent; the odor left on the ground by which the track of game is followed in the chase.
20. n. In hunting, the act of taking breath or air.
21. To scent, as a hound; smell; snuff up; wind.
22. To open or expand the nostrils to the air; sniff; snuff; snort.
23. In hunting, to take breath or air.
24. To draw, as a chimney, or a house, room, etc., by means of a chimney.
25. n. The act of selling; sale.
26. n. Opportunity to sell; market.
27. To vend; sell.
28. n. An inn.

Wiktionary

1. n. An opening through which gases, especially air, can pass.
2. n. The opening of a volcano from which lava flows.
3. n. A verbalized frustration.
4. n. The excretory opening of lower orders of vertebrates.
5. n. A slit in the seam of a garment.
6. v. intransitive To allow gases to escape.
7. v. transitive To allow to escape through a vent.
8. v. transitive, intransitive To express a strong emotion.
9. n. Ventriloquism.

GNU Webster's 1913

1. n. obsolete Sale; opportunity to sell; market.
2. v. obsolete To sell; to vend.
3. n. obsolete A baiting place; an inn.
4. v. obsolete To snuff; to breathe or puff out; to snort.
5. n. A small aperture; a hole or passage for air or any fluid to escape
6. n. (Zoöl.) The anal opening of certain invertebrates and fishes; also, the external cloacal opening of reptiles, birds, amphibians, and many fishes.
7. n. (Gun.) The opening at the breech of a firearm, through which fire is communicated to the powder of the charge; touchhole.
8. n. (Steam Boilers) Sectional area of the passage for gases divided by the length of the same passage in feet.
9. n. Fig.: Opportunity of escape or passage from confinement or privacy; outlet.
10. n. Emission; escape; passage to notice or expression; publication; utterance.
11. v. To let out at a vent, or small aperture; to give passage or outlet to.
12. v. To suffer to escape from confinement; to let out; to utter; to pour forth.
13. v. obsolete To utter; to report; to publish.
14. v. obsolete To scent, as a hound.
15. v. To furnish with a vent; to make a vent in. a mold.

WordNet 3.0

1. n. a hole for the escape of gas or air
2. v. expose to cool or cold air so as to cool or freshen
3. v. give expression or utterance to
4. n. a fissure in the earth's crust (or in the surface of some other planet) through which molten lava and gases erupt
5. n. external opening of urinary or genital system of a lower vertebrate
6. n. a slit in a garment (as in the back seam of a jacket)
7. n. activity that frees or expresses creative energy or emotion