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 , nates , arse , butt , backside , bum , buns , can , fundament , hind end , keister , posterior , prat , rear , rear end , rump , stern , seat , tail , tail end , tooshie , tush , bottom , behind , derriere , fanny , ass ]
the part of an animal that corresponds to the human buttocks