From WordNet (r) 3.0 (2006):
beau
n 1: a man who is the lover of a girl or young woman; "if I'd
known he was her boyfriend I wouldn't have asked" [syn:
boyfriend, fellow, beau, swain, young man]
2: a man who is much concerned with his dress and appearance
[syn: dandy, dude, fop, gallant, sheik, beau,
swell, fashion plate, clotheshorse]