Noun bluefin tuna has 2 senses
  1. bluefin, bluefin tuna - flesh of very large tuna
    --1 is a kind of tuna, tuna fish, tunny
    --1 is a part of bluefin, bluefin tuna, horse mackerel, Thunnus thynnus
  2. bluefin, bluefin tuna, horse mackerel, Thunnus thynnus - largest tuna; to 1500 pounds; of mostly temperate seas: feed in polar regions but breed in tropics
    --2 is a kind of tuna, tunny
    --2 is a member of Thunnus, genus Thunnus
    --2 has parts: bluefin, bluefin tuna
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