rump

Universal Words noun 1 [C] the round area of flesh at the top of the back legs of an animal that has four legs: He slapped the horse on the rump. 2 [U] (also rump steak [C,U]) a piece of good quality meat cut from the rump of a cow 3 [C,usually sing.] (humorous) the part of the body that you sit on SYNBACKSIDE 4 [sing.] (BrE) the small or unimportant part of a group or an organization that remains when most of its members have left: The election reduced the party to a rump.