a dinosaur which resides within a woman's vagina
The Vaginasaur is usually a mild-mannered creature.
by sn January 14, 2005
A vagina that attacks you when you go near it
by Anonymous March 31, 2003
A carnivorous prehistoric creature that primarily fed on the smaller penisaurus.

A sore on the vagina.
A. The vaginasaur was a fierce carnivore that lived during the jurrassic period.

B. Man, that bitch had a vaginasaur.
by robistotle October 02, 2009
The genitalia of an older woman or cougar.
Dude, that guy is always going after the cougars.

Yeah, he's hunting Vaginasaurs.
by Knight hawk March 19, 2009
An old broad, generally dressed up.
Check out that scraggly old vaginasaur over by the bar. I bet Ed Greco would do her!
by Roberto Costapoopoo March 31, 2003
Noun, Synonym for cougar an older women flirting with younger men or just generally doing things she is to old for.
Gross, that vaginasaur's middrift is showing off her C-section scar.
by Queeseso August 24, 2010
To be a major cunt. Usually used as an insult to another person. Usually to a woman.
Girl 1: "Oh my God, Catline was being such a vaginasaur today."

Girl 2: "Oh she totally was!"
by LunartheLycan May 16, 2009
Large, old, leather skin woman
Mrs. Wilson is a cranky Vaginasaurus
by HankScorpio January 25, 2006

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