Beau \Beau\, n.; pl. F. Beaux (E. pron. b?z), E. Beaus. [F., a fop, fr. beau fine, beautiful, fr. L. bellus pretty, fine, for bonulus, dim. of bonus good. See Bounty, and cf. Belle, Beauty.]

1. A man who takes great care to dress in the latest fashion; a dandy.

2. A man who escorts, or pays attentions to, a lady; an escort; a lover.

Source: Webster's Revised Unabridged Dictionary (1913)