Source : Webster's Revised Unabridged Dictionary (1913)

Toadfish \Toad"fish`\, n. (Zo["o]l.)
   (a) Any marine fish of the genus {Batrachus}, having a large,
       thick head and a wide mouth, and bearing some resemblance
       to a toad. The American species ({Batrachus tau}) is very
       common in shallow water. Called also {oyster fish}, and
       {sapo}.
   (b) The angler.
   (c) A swellfish.