Top Definition
A carnivorous human-like being that preys on small mammals such as cats. It will transform into a giant, beautiful, and terrifying bird on the new moon. It hates werewolves, and disguises itself as a strange teenage girl who sometimes bites people.
Jason: Crystal's been acting really weird lately and she bit me! I think she was bitten by a werebird!
by WerebirdsAnonymous December 06, 2011

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