RUMP

[noun] [C] - the back end of an animal, or (humorous) a person's bottomI've bought rump steak (= meat taken from the back end of a cow) for dinner tonight.(humorous) Fred fell down suddenly, his fat rump going in the mud.A rump is also those few members of a group or organization who stay after the others have left or been forced out.The council was reduced to a rump of 10.