Source : Webster's Revised Unabridged Dictionary (1913)

Weakfish \Weak"fish`\, n. (Zo["o]l.)
   Any fish of the genus {Cynoscion}; a squeteague; -- so called
   from its tender mouth. See {Squeteague}.

   {Spotted weakfish} (Zo["o]l.), the spotted squeteague.

Source : WordNet®

weakfish
     n 1: lean flesh of food and game fishes of the Atlantic coast of
          the United States
     2: food and game fish of North American coastal waters with a
        mouth from which hooks easily tear out [syn: {Cynoscion
        regalis}]
     [also: {weakfishes} (pl)]