- [[t]tju͟ːnə, AM tu͟ːnə[/t]]
N-VAR(The plural can be either tuna or tunas.)Tuna or tuna fish are large fish that live in warm seas and are caught for food.N-UNCOUNTTuna or tuna fish is this fish eaten as food.
She began opening a tin of tuna.
English dictionary. 2008.