Top Definition
An incorrect name given to a sauropod skeleton. It was originally believed to be a new genus, but was later understood to be the same creature as the Apatosaurus.
Brontosaurus burgers couldn't have existed, correct?
by Diggity Monkeez March 17, 2005
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A term used to indicate a very old person.
"That old hag's a friggin' brontosaurus!"
by Dave January 14, 2004
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Some shit that doesn't exist because Apatosaurus killed it in its sleep.
Boobs? Ha, those are Brontosauruses, bra stuffer!
by Trololololium September 26, 2011
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When a 7 year old curly haired kid gives a blowie to a T-Rex
Yes Brontosaurus give it me in the ass
via giphy
by My name is Danekwa February 19, 2017
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The act of kicking someone square in the rectum with the toe of the foot.
Johnny brontosaurused Jim right after he made a joke about his penis size.
by Kwzono June 24, 2007
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A nickname for the penis.
"Mark, quit tugging on your Brontosaurus in the theater!"
by CCOBB April 01, 2006
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