Top definition
(n) a jurassic beast that disguises itself with ray bans, baseball hats, pierced ears, nikes, popped collars, and beer. Often seen preying on women or running in a flock of other brosaurs at a party.
Look over there! It's a brosaur in its natural habitat by its watering hole, a keg of Natty Light!
by blithering dildo March 10, 2011
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