1.  bluefin tuna(n = noun.food) bluefin - flesh of very large tuna;
is a kind of tuna, tuna fish, tunny
is a part of bluefin, bluefin tuna, horse mackerel, thunnus thynnus

2.  bluefin tuna(n = noun.animal) bluefin, horse mackerel, thunnus thynnus - largest tuna; to 1500 pounds; of mostly temperate seas: feed in polar regions but breed in tropics;
is a kind of tuna, tunny
has parts: bluefin, bluefin tuna
is a member of genus thunnus, thunnus

bluefin, opuntia tuna, skipjack tuna, tuna, tuna fish, tuna fish salad, tuna oil, tuna salad, yellowfin tuna