Pronunciation: (tOO'nu, tyOO'-),[key] —n., —pl.(esp. collectively)-na,(esp. referring to two or more kinds or species)-nas. 1. any of several large food and game fishes of the family Scombridae, inhabiting temperate and tropical seas. Cf. albacore, bluefin tuna, yellowfin tuna. 2. any of various related fishes.
3. Also called tu'na fish". the flesh of the tuna, used as food.
Pronunciation: (tOO'nu, tyOO'-),[key] —n. 1. any of various prickly pears, esp. either of two erect, treelike species, Opuntia tuna or O. ficus-indica, of Mexico, bearing a sweet, edible fruit.
2. the fruit of these plants.