One who displays an air of bitch with a high enough caliber to spark the relation to that of a vicious mythological beast.
Karina is a Bitchzilla.
by Tobius February 22, 2004
...a really big, if not in size then statue, bitch!
That woman always complaining. She always got a gripe on. She is the biggest bitchzilla I know!
by jnemes65 May 28, 2015