1. The end of the backbone of an animal, with the parts adjacent; the buttock or buttoks. 2. Among butchers, the piece of beef betwen the sirloin and the aitchbone piece. See Illust. of Beef. 3. Fig.: The hind or tail end; a fag-end; a remnant. Rump Parliament, or The Rump (Eng. Hist.), the remnant of the Long Parliament after the expulsion by Cromwell...