The Collaborative International Dictionary
Tuna \Tu"na\, n. [Cf. Tunny.]
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(Zo["o]l.) any one of several species of large oceanic fishes belonging to the mackerel family Scombridae, especially the bluefin tuna ( Thunnus thynnus, formerly Orcynus thynnus or Albacora thynnus), called also the common tunny or great tunny, a native of the Mediterranean Sea and of temperate parts of the Atlantic Ocean. It sometimes weighs a thousand pounds or more, and is caught commercially in large quantity for use as food; -- also called, especially in Britain, tunny. It is also one of the favorite fishes used by the Japanese in preparing sushi. On the American coast, especially in New England, it is sometimes called the horse mackerel. Another well-known species is the yellowfin tuna ( Thunnus albacares) of warm seas. the See Illust. of Horse mackerel, under Horse.
Note: The little tunny ( Gymnosarda alletterata) of the Mediterranean and North Atlantic, and the long-finned tunny, or albacore ( Thunnus alalunga) (see Albacore), are related species of smaller size.
The bonito, 2.
the meat of the tuna, used as food; -- also called tuna fish.
Wiktionary
n. 1 (context countable English) The tuna or tunny 2 (context uncountable English) The flesh of this fish, used as food
WordNet
Usage examples of "tuna fish".
Hilary bought two cans of tuna fish, a jar of baby food, a loaf of bread, some mayonnaise, butter, half a dozen eggs, a container of milk and a can of beer for their hostess.
A man who lived alone and ate a lot of tuna fish didn't waste a lot of time and energy on fancy interior design work.
When she was satisfied that she had the drop on both Batman and Eddie Lobb, she sat cross-legged on the capstones and popped open a can of tuna fish.
Now the egg was gone, the tuna fish sandwich was gone, the chips were gone, and the Twinkies were gone.
Not even a sea snake had taken our wrong-minded bait, and the water all around us was littered with floating debris: beer bottles, orange peels, plastic baggies and mangled tuna fish cans.
To the Morrigan (for all they cared), they were safer in their homes the same way a tuna fish is safer in a can, but no one knew that yet.
Did you know that a lot of them die just because we like to eat tuna fish?
When I walk back to the house Kimy is in the kitchen making the kind of tuna fish casserole that has potato chips crumbled over it.
Now, if he'd caught a shark, he could have taken home the jaw and teeth, but an albacore, magnificent as it was, was just tuna fish.
Recently she disproved one of Einstein's fundamental theories by using atomically synchronized cameras to observe a school of tuna fish.
Management decided that Samoans were too lazy and undependable to use as a work force, so they pulled the strings to permit the importation of fishermen from Japan, a great horde of squat, dim little subhuman robots who are managing to kill all the porpoise in the Pacific along with their damned tuna fish.