Uca

(redirected from UCA (disambiguation))
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Noun1.Uca - fiddler crabsUca - fiddler crabs        
arthropod genus - a genus of arthropods
Brachyura, suborder Brachyura - an order of crustaceans (including true crabs) having a reduced abdomen folded against the ventral surface
fiddler crab - burrowing crab of American coastal regions having one claw much enlarged in the male