Top Definition
(noun) a large flightless bird, typically characterized by stumplike cankles
Damn birdus is so angry that he can't get up on that tree.
by Monsignor Diablo January 30, 2012
When one flips the middle finger to another in an act of anger
joe- dan you just lost at ping-pong you suck

dan flips off joe

Joe- Dont you go and flip me the birdus
by cacka craig June 18, 2005
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