Gynosaur 

One step above "Cougar" in the scale of women. Pussy so old its fossilized.
a.k.a. Rapidly aging, Botox-addict and ex-supermodel Janice Dickinson.

" Man, what a gynosaur...I'd probably screw her, just gotta remember to blow the dust off first. "

Gynosaur by the Den of Iniquity October 6, 2006

gynosaur 

a gynecologist dinosaur

Dr. Lickalottapuss, do you suppose there were many gynosaurs helping deliver babies in the Jurassic period?

gynosaur by dookeyboy November 24, 2010

gynosaur 

A term used to describe either a highly horrendous looking or obese woman who relentlessly pursues the male sex. In other words, a fat or ugly chick who chases unwilling men.

Dude, that gynosaur totally tried to jump Jimmy the other day!

gynosaur by Not One OR July 9, 2011

Gynosaur 

Pronounced:: Guy-no-sore-

Definition:: A woman who is well past her prime (usually mid forties and up, though age does not have to be the determining factor) yet is still actively seeking sexual relationships with men who are much younger or well out of her league.

Alternatively a younger women that looks much older, or appears to have been around the block more than her share of times can be referred to as a gynosaur.

Whereas the being, or sleeping with a cougar has become more acceptable in recent years, the same cannot be said of a gynosaur. Gynosaurs are most often cougars that never learned when to stop.

Guy 1: Dude did you see that milf over there?

Guy 2: No, where?
Guy 1: She's standing right over there next to those two gynosaurs.

or

Guy 1: Hey did I see you mom at the bar last night?
Guy 2: Yeah she was celebrating her 50th birthday with some friends.
Guy 1: Dude she kept trying to hit on me, thats gross she's a total gynosaur.

Gynosaur by Eyesmokepcp December 27, 2009

gynosaur 

A lesbian who can't get enough of eating pussy or being eaten out. Essentially, a cunnilingus addict. Also into finger-fucking.

Do you suppose Britney and Lindsay are gynosaurs?

gynosaur by Steely Dan Fan June 13, 2007

Gaynosaur 

A big ass person about 6'8 or taller with the combination of also being a sexual predator that hunts for penis during the night.

The guy that died last night may have been a victim of a Gaynosaur attack.

Gaynosaur by The Stuffinator Knowhow March 5, 2015

gynasaur 

old lady, girlfren, wife etc

i was gonna go to the pub but, the _gynasaur_ bit me on the arse.

gynasaur by cravan May 11, 2011