bunny suit noun 4verb 1forms 3 noun4 •A rabbit costume. •(slang) A cleanroom suit. •(slang) A hazmat suit, or chemo- or biosafety suit. •A Playboy Bunny uniform, for waitresses of Playboy Clubs; see also bunny girl. verb1 •To wear a bunny suit. formsbunny suited · bunny suiting · bunny suits