Top Definition
A mix between a bear and a rhino. Most often created with genetic engineering but every once in a while can be created naturally.

The most badass creature known to man, it has been recruited by the military to take out entire platoons of enemies.
Tom: So last week a zoo tried to have a bearnoceros on display.

Kyle: Really, what happened?

Tom: Uh, it killed everyone and everything in the zoo except one guy, but now he doesn't have any arms or legs.
by Gulke February 04, 2010

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