Synonyms for Fluke (same or very similar meaning)
WordNet sense 1 (a stroke of luck):
good luck, good fortuneWordNet sense 2 (flat bladelike projection on the arm of an anchor):
flueWordNet sense 3 (parasitic flatworms having external suckers for attaching to a host):
trematode, trematode wormFrom the ODE community, based on WordNetadd/edit