As discussed here http://www.emptyclosets.com/forum/showthread.php?p=204303#post204303 and requested by PM.
bra·vo interj. Used to express approval, especially of a performance. n. pl. bra·vos A shout or cry of "bravo." v. bra·voed, bra·vo·ing, bra·voes v. tr. To express approval of by shouting "bravo." From dictionary.com.