n. (pl. same or tunas) 1 any marine fish of the family Scombridae native to tropical and warm waters, having a round body and pointed snout, and used for food. Also called TUNNY. 2 (in full tuna-fish) the flesh of the tuna or tunny, usu. tinned in oil or brine.
[ Amer. Sp., perh. f. Sp. at£n tunny ]