ass
     n 1: 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},
           {hindquarters}, {hind end}, {keister}, {posterior}, {prat},
           {rear}, {rear end}, {rump}, {stern}, {seat}, {tail}, {tail
          end}, {tooshie}, {tush}, {bottom}, {behind}, {derriere},
           {fanny}]
     2: a pompous fool
     3: hardy and sure-footed animal smaller and with longer ears
        than the horse
     4: slang terms for sexual intercourse [syn: {fuck}, {fucking},
        {screw}, {screwing}, {nooky}, {nookie}, {piece of ass}, {piece
        of tail}, {roll in the hay}, {shag}, {shtup}]
Source: WordNet® 2.0