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|Noun||1.||genus Thunnus - tunas: warm-blooded fishes |
fish genus - any of various genus of fish
tunny, tuna - any very large marine food and game fish of the genus Thunnus; related to mackerel; chiefly of warm waters
horse mackerel, Thunnus thynnus, bluefin, bluefin tuna - largest tuna; to 1500 pounds; of mostly temperate seas: feed in polar regions but breed in tropics