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Noun: buttocks  bú-tuks
  1. The fleshy part of the human body that you sit on
    "he deserves a good kick in the buttocks";
    - nates [technical], butt [N. Amer, informal], backside, bum [Brit, informal], buns [N. Amer, informal], can [N. Amer, informal], fundament, hindquarters, hind end, posterior, rear [informal], rear end [informal], rump, stern [informal], seat, tail [N. Amer, informal], tail end, tooshie [informal], tush [N. Amer, informal], bottom, behind, derriere, booty [N. Amer, informal], botty [informal], heinie [US, informal], bahookie [UK, dialect, informal], duff [N. Amer, informal], patootie [US, informal], tushy [N. Amer, informal], derrière
Noun: buttock  bú-tuk
  1. Either of the two large fleshy masses of muscular tissue that form the human rump
    - cheek

Type of: body part

Part of: body, torso, trunk

Encyclopedia: Buttocks