tupPronunciation: (tup), [key]
—n., v., tupped, tup•ping.
1. Chiefly Brit.
a male sheep; ram.
the head of a falling hammerlike mechanism, as of a steam hammer or pile driver.
(of a ram) to copulate with (a ewe).
(of a ewe) to copulate.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.