Source : Webster's Revised Unabridged Dictionary (1913)

Crampfish \Cramp"fish`\ (kr?mp"f?sh`), n. (Zo["o]l.)
   The torpedo, or electric ray, the touch of which gives an
   electric shock. See {Electric fish}, and {Torpedo}.

Source : WordNet®

crampfish
     n : any sluggish bottom-dwelling ray of the order
         Torpediniformes having a rounded body and electric organs
         on each side of the head capable of emitting strong
         electric discharges [syn: {electric ray}, {numbfish}, {torpedo}]