the fleshy part of the human body that you sit on; he deserves a good kick in the butt; are you going to sit on your fanny and do nothing?

[ Syn: buttocks , arse , butt , backside , bum , buns , can , fundament , hindquarters , hind end , keister , posterior , prat , rear , rear end , rump , stern , seat , tail , tail end , tooshie , tush , bottom , behind , derriere , fanny , ass ]