Beau \Beau\ (b[=o]), n.; pl. F. {Beaux} (E. pron. b[=o]z), E. {Beaus} (b[=o]z). [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. [1913 Webster] 2. A man who escorts, or pays attentions to, a lady; an escort; a suitor or lover. [1913 Webster]