Rump (?), n. [OE. rumpe; akin to D. romp trunk, body, LG. rump, G.
rumpf, Dan. rumpe rump, Icel. rumpr, Sw. rumpa rump, tail.] 1. The end
of the backbone of an animal, with the parts adjacent; the buttock or
buttocks.
2. Among butchers, the piece of beef between the sirloin and the
aitchbone piece. See Illust. of Beef.