Top Definition
Any group or social network of homosexual males that partakes in, spreads, or otherwise promotes rumors and/or gossip. Often involves multiple ex-boyfriends/lovers. On college campuses, it typically consists of every gay man on campus, except for a few who have been excluded for refusing to partake in gossiping.
Jane: Did you here that John, that soccer jock in Jim's fraternity, is gay? Yea, I heard it through the gayvine.

Jack: I don't care; I don't gossip about people's sexualities. That's their own business.
by grahamkq1 August 10, 2009

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