- any small, burrowing crab of the genus Uca, characterized by one greatly enlarged claw in the male.
Origin of fiddler crab
An Americanism dating back to 1700–10
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- any of various burrowing crabs of the genus Uca of American coastal regions, the males of which have one of their anterior pincer-like claws very much enlarged
C19: referring to the rapid fiddling movement of the enlarged anterior claw of the males, used to attract females