What is the meaning of vent?

noun

• A hole for the escape of gas or air.
  • synonyms: venthole, vent-hole, blowhole
• External opening of urinary or genital system of a lower vertebrate.
• A fissure in the earth's crust (or in the surface of some other planet) through which molten lava and gases erupt.
  • synonyms: volcano
• A slit in a garment (as in the back seam of a jacket. )
• Activity that frees or expresses creative energy or emotion.
  • usage: "she had no other outlet for her feelings"; "he gave vent to his anger"
  • synonyms: release, outlet

verb

• Give expression or utterance to.
  • usage: "She vented her anger"; "The graduates gave vent to cheers"
  • synonyms: ventilate, give vent
• Expose to cool or cold air so as to cool or freshen.
  • usage: "air the old winter clothes"; "air out the smoke-filled rooms"
  • synonyms: ventilate, air out, air