n.
Pronunciation: ' tü-n ə , ' tyü-
Function: noun
Inflected Form: plural tuna or tunas
Etymology: American Spanish, alteration of Spanish atún, modification of Arabic t ū n, from Latin thunnus, from Greek thynnos
Date: 1881
1 : any of numerous large vigorous scombroid food and sport fishes (as an albacore or a bluefin tuna)
2 : the flesh of a tuna especially when canned for use as food ― called also tuna fish