1. The part of an animal that corresponds to the human buttocks
   "The rider patted the horse's rump after dismounting";
   - hindquarters, croup, croupe
    
2. [informal] The fleshy part of the human body that you sit on
   "he deserves a good kick in the rump";
   - buttocks, nates [informal, technical], butt [N. Amer, informal], backside [informal], bum [Brit, informal], buns [N. Amer, informal], can [N. Amer, informal], fundament [informal], hindquarters [informal], hind end [informal], posterior [informal], rear [informal], rear end [informal], stern [informal], seat [informal], tail [N. Amer, informal], tail end [informal], tooshie [informal], tush [N. Amer, informal], bottom [informal], behind [informal], derriere [informal], patootie [US, informal], botty [informal], duff [N. Amer, informal], bahookie [UK, dialect, informal], booty [N. Amer, informal], heinie [US, informal], tushy [N. Amer, informal], derrière [informal]
    
3. Fleshy hindquarters; behind the loin and above the round
   "The rump roast was perfect for a large family gathering"

Derived forms: rumps

Type of: body part, cut of beef

Part of: bird, birdie [informal], body, quadruped, torso, trunk

Encyclopedia: Rump