1) Brosme brosme 2) Cusk 3) Gadoid 4) Gadoid fish 1) Cod 
• (n.) The codfish. Called also tusk. • (n.) The cusk. See Cusk.
Torsk noun [ Dan.; akin to Icelandic þorskr a codfish, German dorsch .] (Zoology) (a) The cusk. See Cusk . (b) The codfish. Called also tusk . 
The torsk or tusk (Brosmius brosme) is a food fish of the cod family found in both sides of the Atlantic Ocean. The body is cylindrical; there is one very long dorsal, and one long ventral fin; the scales are minute and the colouring is grey. The fish grows to a length of one meter.USS Torsk was an American Balao Class submarine of 1525 tons displacement launched in 1944. USS Torsk was powered by diesel engines providing a top speed of 21 knots, carried a complement of 75 and was armed with one 4-inch gun, two 20 mm Oerlikon anti-aircraft guns; six 21 inch bow torpedo tubes and four 21 inch stern torpedo tubes.
A large saltwater fish related to the cod. It has a firm, lean flesh. Also called 'cusk.' 
Brosme brosme noun large edible marine fish of northern coastal waters; related to cod