noun weak·fish \ˈwēk-ˌfish\

Definition of weakfish

  1. 1 :  a common marine bony fish (Cynoscion regalis of the family Sciaenidae) of the eastern coast of the U.S. that is an important sport and food fish —called also sea trout

  2. 2 :  any of several fishes congeneric with the weakfish

Origin and Etymology of weakfish

obsolete Dutch weekvis, from Dutch week soft + vis fish

First Known Use: 1791

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