Definition of: vent

(vent) noun
1. An opening, commonly small, for the passage of fluids, gases, etc.; hence, an outlet of any kind: also vent hole.
2. The act of giving utterance, as to passion; expression; escape; passage: now usually in the phrase to give vent to.
3. Zool. The external opening of the alimentary canal, especially of animals below mammals; the anus.
4. A touchhole of a gun.
—v.t.
1. To give expression to: to vent one's rage.
2. To relieve, as by giving vent to emotion.
3. To permit to escape at a vent, as a gas.
4. To make a vent in, as a mold. [ME fent <OF fente cleft <fendre cleave <L findere split]