fluke

A fluke is an unexpected stroke of good luck. It was a fluke to find that fifty dollar bill on the ground, and it made you smile for the rest of the day.

The word fluke was first used in 1857 in reference to a lucky shot at billiards. If something good happens to you by chance when you're not expecting it, that's a fluke. The word fluke can also be used in a negative or insulting way. For example, if your favorite sports team loses an important game, you could complain that it was just a fluke that the other team won — meaning they didn't deserve to win and somehow got lucky.

Definitions of fluke
  1. noun
    a stroke of luck
    synonyms: good fortune, good luck
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    types:
    serendipity
    good luck in making unexpected and fortunate discoveries
    type of:
    fortune, luck
    an unknown and unpredictable phenomenon that leads to a favorable outcome
  2. noun
    either of the two lobes of the tail of a cetacean
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    type of:
    tail
    the posterior part of the body of a vertebrate especially when elongated and extending beyond the trunk or main part of the body
  3. noun
    flat bladelike projection on the arm of an anchor
    synonyms: flue
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    type of:
    projection
    any structure that branches out from a central support
  4. noun
    parasitic flatworms having external suckers for attaching to a host
    synonyms: trematode, trematode worm
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    types:
    Fasciola hepatica, liver fluke
    flatworm parasitic in liver and bile ducts of domestic animals and humans
    Fasciolopsis buski
    fluke that is parasitic on humans and swine; common in eastern Asia
    blood fluke, schistosome
    flatworms parasitic in the blood vessels of mammals
    type of:
    flatworm, platyhelminth
    parasitic or free-living worms having a flattened body
  5. noun
    a barb on a harpoon or arrow
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    type of:
    barb
    a subsidiary point facing opposite from the main point that makes an arrowhead or spear hard to remove
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