Beau \beau\ as a boy's name (also used as girl's name Beau), is pronounced boh. It is of French origin, and the meaning of Beau is "handsome; admirer; sweetheart". Short form of Beauregard, and of modern coinage. Use as a given name is probably due to the hero of P.C. Wren's novel "Beau Geste" (1924) or to the character of Beau Wilks in Margaret Mitchell's "Gone with the Wind" (1936). Nowadays, the name is likely to be heard as the less formal Bo. English dandy Beau Brummell; actor Beau Bridges; sports celebrity Bo Jackson.