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1.
Word used to describe a woman or a group of women who are particularly hideous looking.

Or to describe a drunk horny woman after a heavy night on the town.
Dude 1: Mate don't go in that night club, its an absolute gashtashtrophy in there.

Dude 2: Thanks for the heads up. Ill go somewhere else.
by The Gash Meister May 04, 2011