Source : Webster's Revised Unabridged Dictionary (1913)

Devilfish \Dev"il*fish`\, n. (Zo["o]l.)
   (a) A huge ray ({Manta birostris} or {Cephaloptera vampyrus})
       of the Gulf of Mexico and Southern Atlantic coasts.
       Several other related species take the same name. See
       {Cephaloptera}.
   (b) A large cephalopod, especially the very large species of
       {Octopus} and {Architeuthis}. See {Octopus}.
   (c) The gray whale of the Pacific coast. See {Gray whale}.
   (d) The goosefish or angler ({Lophius}), and other allied
       fishes. See {Angler}.

Source : WordNet®

devilfish
     n 1: medium-sized grayish-black whale of the northern Pacific
          [syn: {gray whale}, {Eschrichtius gibbosus}, {Eschrichtius
          robustus}]
     2: bottom-living cephalopod having a soft oval body with eight
        long tentacles [syn: {octopus}]
     3: extremely large pelagic tropical ray that feeds on plankton
        and small fishes; usually harmless but its size make it
        dangerous if harpooned [syn: {manta}, {manta ray}]
     [also: {devilfishes} (pl)]