buttocks Meaning, Definition & Usage

  1. noun the fleshy part of the human body that you sit on
    bum; seat; stern; keister; tail end; prat; bottom; rear end; buns; tail; tush; rump; fanny; ass; behind; tooshie; hind end; posterior; hindquarters; butt; nates; rear; arse; backside; derriere; can; fundament.
    • he deserves a good kick in the butt
    • are you going to sit on your fanny and do nothing?
  2. noun either of the two large fleshy masses of muscular tissue that form the human rump
    cheek; buttock.

WordNet