1) Bluefin tuna 2) Flesh of very large tuna 3) Largest tuna 4) One of the tunas 5) Tekka-maki sushi source 6) To 1500 pounds 7) Tuna 8) Tuna fish 9) Tunny 1) Tuna 
• (n.) A species of whitefish (Coregonus nigripinnis) found in Lake Michigan.Waters: Temperate salt Waters worldwide Description (in water): A large, muscular, extremely fast swimmer of the mackerel family. Most species have blue or blue-black backs that fade into silvery sides and bellies. Smallest are skipjacks (5 to 40 lbs.), followed by albacores (10 to 60 lbs.), and yellowfin (can weigh several hundred lbs.); bluefin is largest (up to one ton). Description (in market): The dense and firm meat is tender, full-flavored, and flaky. While tuna usually contains a moderat…...
Blue'fin` noun (Zoology) A species of whitefish ( Coregonus nigripinnis ) found in Lake Michigan. 
[n] - flesh of very large tuna 2. [n] - largest tuna
bluefin tuna noun largest tuna; to 1500 pounds; of mostly temperate seas: feed in polar regions but breed in tropics