Vent is something that lets air in and out.(noun)
An example of vent is the part of your air conditioning system where the cool air blows out.
To vent is to complain about something you are annoyed or angry about in order to relieve some of your anger.(verb)
An example of vent is when you call your friend and whine to her about how your husband never unloads the dishwasher.
See vent in Webster's New World College Dictionary
Origin: ME venten < OFr venter, to blow (or aphetic < OFr esventer, to expose to the air, let out < es-, out + venter) < VL *ventare < L ventus, wind
Origin: ME vent, altered (infl. by vent) < fente < OFr < VL *findita, fem. pp., for L fissus, pp. of findere, to split: see fission
See vent in American Heritage Dictionary 4
Origin: Partly from French vent (from Old French)
Origin: and partly alteration of French évent (from Old French esvent, from esventer, to let out air, from Vulgar Latin *exventāre : Latin ex-; see ex- + Latin ventus, wind; see wē- in Indo-European roots).
Origin: Middle English vente
Origin: , alteration (probably influenced by Old French vent, wind)
Origin: of fente
Origin: , from Old French, slit
Origin: , from fendre, to split open
Origin: , from Latin findere; see fission.
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