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1.
A very large bro, weighing over 200 pounds and at least 6 ft tall. Commonly used with "bronormous".
Steve is a fucking brozilla! I can feel the ground shake when he comes.
by OffshoreDolphin June 25, 2009
 
2.
A bro doing amazing bro things with his bros becomes a brozilla!!!

Godzilla + Bro + Asian inability to pronounce Ls= Broziiiirrrraaa!!!
Hey brozilla, good looking out on bringing us back some beers."
by Broziiirrraaaa!!! September 22, 2011
 
3.
an uptight guy who doesn't like looking silly
My brozilla ain't down with wearing a Halloween costume nor any other ostentatious displays of self-expression.
by Jughead October 02, 2004