WordNet (r) 3.0 (2006):
good luck n 1: an auspicious state resulting from favorable outcomes [syn: good fortune, luckiness, good luck] [ant: bad luck, ill luck, misfortune, tough luck] 2: a stroke of luck [syn: good luck, fluke, good fortune] 3: an unexpected piece of good luck; "he finally got his big break" [syn: break, good luck, happy chance]