backside

[ bak-sahyd ]
/ ˈbækˌsaɪd /

noun

the rear or back part or view of an object, person, scene, etc.; that part which is opposite the front.
rump; buttocks.

Origin of backside

1350–1400; Middle English back syde; see back1, side1; compare Old English bæce backside

Example sentences from the Web for backside

British Dictionary definitions for backside

backside
/ (ˌbækˈsaɪd) /

noun

the back of something
(ˈbækˌsaɪd) informal the buttocks