Top Definition
the coolest looking dinosaur.
and as the amazing sebasaur passed, they were all in awe. and scared of being eaten.
by sofie May 17, 2004

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commonly used to describe members of the band Sebadoh that used to be in the band Dinosaur Jr.
Lou Barlow sure is one rocking sebasaur!
by deanmachine October 07, 2006

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