1. (n.) The European flounder. See Flounder.

2. (n.) 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.

3. (n.) The part of an anchor which fastens in the ground. See Anchor.

4. (n.) One of the lobes of a whale's tail, so called from the resemblance to the fluke of an anchor.

5. (n.) An instrument for cleaning out a hole drilled in stone for blasting.

6. (n.) 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.

Chilopoda Chordata Echiuroidea Ectoprocta Entoprocta Monoplacophora Nemertinea Phoronidea accident adventure blessing break casualty chance hit contingency contingent fortuity freak accident hap happening happenstance hazard long odds long shot lucky break lucky shot lucky strike run of luck serendipity streak of luck stroke of luck windfall