1.) (n.) an unwashed or otherwise smelly vaginal orifice. Referred to as such for the unsubstantiated belief that such vaginas emit a visible green cloud of noxious, toxic stench.
2.) (n.) Term used to describe a woman in possession of a vagina that suffers from the aforementioned malady.
1.) Can you believe it, Juan? I mean who knew Miss Krupitzer had a green hole? I swear to Christ, I went down on that thing and damn near gagged.
2.) After Doug sampled every girl on the cheerleading squad, he confirmed that Nicole and Heather were to be avoided; they're green holes. He's still swilling Listerine a week later.