n. [ Beef + eater; prob. one who eats another's beef, as his servant. Cf. AS. hlāf&aemacr_;ta servant, properly a loaf eater. ] 1. One who eats beef; hence, a large, fleshy person. [ 1913 Webster ]

2. One of the yeomen of the guard, in England. [ 1913 Webster ]

3. (Zool.) An African bird of the genus Buphaga, which feeds on the larvæ of botflies hatched under the skin of oxen, antelopes, etc. Two species are known. [ 1913 Webster ]

adj. made greater or stronger. beefed-up sales efforts [ WordNet 1.5 ]