Cusk

from WordNet (r) 3.0 (2006)

cusk
    n 1: the lean flesh of a cod-like fish of North Atlantic waters
    2: large edible marine fish of northern coastal waters; related
       to cod [syn: {cusk}, {torsk}, {Brosme brosme}]
    3: elongate freshwater cod of northern Europe and Asia and North
       America having barbels around its mouth [syn: {burbot},
       {eelpout}, {ling}, {cusk}, {Lota lota}]

from The Collaborative International Dictionary of English v.0.48

Cusk \Cusk\ (k[u^]sk), n. (Zool.)
   A large, edible, marine fish ({Brosmius brosme}), allied to
   the cod, common on the northern coasts of Europe and America;
   -- called also {tusk} and {torsk}.
   [1913 Webster]