WordNet (r) 3.0 (2006):

wolffish
    n 1: large ferocious northern deep-sea food fishes with strong
         teeth and no pelvic fins [syn: wolffish, wolf fish,
         catfish]
    2: large elongate scaleless oceanic fishes with sharp teeth and
       a long dorsal fin that resembles a sail [syn: lancetfish,
       lancet fish, wolffish]