fiddler crab

from WordNet (r) 3.0 (2006)

fiddler crab
    n 1: burrowing crab of American coastal regions having one claw
         much enlarged in the male

from The Collaborative International Dictionary of English v.0.48

Fiddler \Fid"dler\, n. [AS. fi[eth]elere.]
   1. One who plays on a fiddle or violin.
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   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}.
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   3. (Zool.) The common European sandpiper ({Tringoides
      hypoleucus}); -- so called because it continually
      oscillates its body.
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   {Fiddler crab}. (Zool.) See {Fiddler}, n., 2.
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