noun (n)

• the fleshy part of the human body that you sit on(noun.body)

  Synonym:
  arse, backside, behind, bottom, bum, buns, butt, buttocks, can, derriere, fanny, fundament, hind end, hindquarters, keister, nates, posterior, prat, rear, rear end
  

  source: wordnet30
• a pompous fool(noun.person)

  source: wordnet30
• hardy and sure-footed animal smaller and with longer ears than the horse(noun.animal)

  source: wordnet30
• slang for sexual intercourse(noun.act)

  Synonym:
  fuck, fucking, nookie, nooky, piece of ass, piece of tail, roll in the hay, screw, screwing, shag, shtup
  

  source: wordnet30
• A quadruped of the genus Equus (E. asinus), smaller than the horse, and having a peculiarly harsh bray and long ears. The tame or domestic ass is patient, slow, and sure-footed, and has become the type of obstinacy and stupidity. There are several species of wild asses which are swift-footed.(noun)

  source: webster1913