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Noun: backside  'bak,sId [N. Amer], ,bak'sId [Brit]
  1. The side of an object that is opposite its front
    "his room was toward the backside of the hotel";
    - rear, back end
  2. The fleshy part of the human body that you sit on
    "he deserves a good kick in the backside";
    - buttocks, nates [technical], butt [N. Amer, informal], 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, bahookie [UK, dialect, informal], botty [informal], heinie [US, informal], duff [N. Amer, informal], booty [N. Amer, informal], patootie [US, informal], tushy [N. Amer, informal], derrière

Derived forms: backsides

Type of: body part, face, side

Part of: body, torso, trunk

Encyclopedia: Backside