<p><strong>Noun</strong></p><ul><li>Plural (especially collectively): tuna, (especially referring to two or more kinds or species) tunas.</li><li>Any of several large food and game fishes of the family Scombridae, inhabiting temperate and tropical seas.</li><li>Compare: albacore, bluefin tuna, yellowfin tuna.</li><li>Any of various related fishes.</li><li>Also called tuna fish.</li><li>The flesh of the tuna, used as food.</li></ul>