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Definition of fluke:

  1. A parasitic trematode worm of several species, having a flat, lanceolate body and two suckers. Two species ( Fasciola hepatica and Distoma lanceolatum) are found in the livers of sheep, and produce the disease called rot.
  2. An accidental and favorable stroke at billiards ( called a scratch in the United States); hence, any accidental or unexpected advantage; as, he won by a fluke.
  3. An instrument for cleaning out a hole drilled in stone for blasting.
  4. One of the lobes of a whale's tail, so called from the resemblance to the fluke of an anchor.
  5. The European flounder. See Flounder.
  6. The part of an anchor which fastens in the ground; a flook. See Anchor.
  7. To get or score by a fluke; as, to fluke a play in billiards.


good fortune, stochastic, happy chance, trematode worm, trematode, incidental, flue, labial pipe, hazard, break, hap, accidentally, coincidentally, flue pipe, unlucky, surprise, happenchance, time, certain, strike, luckiness, serendipity, good luck.

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