Fid·dler n.
  1. One who plays on a fiddle or violin.
  2. Zool. A burrowing crab of the genus Gelasimus, of many species. The male has one claw very much enlarged, and often holds it in a position similar to that in which a musician holds a fiddle, hence the name; -- called also fiddler crab, calling crab, soldier crab, and fighting crab.
  3. Zool. The common European sandpiper (Tringoides hypoleucus); -- so called because it continually oscillates its body.
  Fiddler crab. Zool. See Fiddler, n., 2.
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  Fight·ing, a.
  1. Qualified for war; fit for battle.
     An host of fighting men.   --2 Chron. xxvi. 11.
  2. Occupied in war; being the scene of a battle; as, a fighting field.
  A fighting chance, one dependent upon the issue of a struggle. [Colloq.]
  Fighting crab Zool., the fiddler crab.
  Fighting fish Zool., a remarkably pugnacious East Indian fish (Betta pugnax), reared by the Siamese for spectacular fish fights.
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