A Quick and Simple Dictionary

fluke

1. Noun.  A lucky or improbable occurrence, with the implication that the occurrence could not be repeated.
2. Noun.  Either of the two lobes of a whale's or similar creature's tail.
3. Noun.  (nautical) Any of the triangular blades at the end of an anchor, designed to catch the ground.
4. Noun.  A flounder.
5. Noun.  A trematode; a parasitic flatworm of the trematoda class, related to the tapeworm.
6. Noun.  A metal hook on the head of certain staff weapons (such as a bill), made in various forms depending on function, whether used for grappling or to penetrate armour when swung at an opponent.
7. Noun.  In general, an offshoot from a central piece.
8. Verb.  To obtain a successful outcome by pure chance.
9. Verb.  (context, snooker) To fortuitously pot a ball in an unintended way.