tunny (n.)

large sea-fish of the mackerel order, 1520s, probably via French thon (14c.), from Old Provençal ton or Italian tonno and directly from Latin thunnus "a tuna, tunny," from Greek thynnos "a tuna, tunny," possibly with a literal sense of "darter," from thynein "dart along."

One of the largest food-fishes and the object of important fisheries from remote antiquity in the Mediterranean. In ancient Greece it was the food-fish par excellence, with its own vocabulary of culinary and market terms for the cuts and preparations of it.