Ass

noun
  1. A domesticated hoofed mammal of the horse family with long ears and a braying call, used as a beast of burden; a donkey. noun
    The farmer used an ass to carry supplies up the mountain.
    In the story, the ass was known for its stubbornness.
  2. A foolish or stupid person. noun
    He made an ass of himself by arguing with the referee.
    Don't be such an ass, listen to what she's saying.
  3. The buttocks or the fleshy part of the human body on which one sits. noun
    He slipped and fell on his ass.
    She worked out regularly to tone her ass.
  4. A slang term for a person, often used in a derogatory manner. noun
    He's such an ass for not helping out when we needed him.
    Stop being an ass and apologize.