- tuna, Opuntia tuna - tropical American flat-jointed prickly pear; Jamaica
--1 is a kind of prickly pear, prickly pear cactus
- tuna, tuna fish, tunny - important warm-water fatty fish of the genus Thunnus of the family Scombridae; usually served as steaks
--2 is a kind of saltwater fish
--2 is a part of tuna, tunny
--2 has particulars: albacore; bonito; bluefin, bluefin tuna - tuna, tunny - any very large marine food and game fish of the genus Thunnus; related to mackerel; chiefly of warm waters
--3 is a kind of scombroid, scombroid fish; food fish
--3 is a member of Thunnus, genus Thunnus
--3 has parts: tuna, tuna fish, tunny
--3 has particulars:albacore, long-fin tunny, Thunnus alalunga; bluefin, bluefin tuna, horse mackerel, Thunnus thynnus; yellowfin, yellowfin tuna, Thunnus albacares - tuna, Anguilla sucklandii - New Zealand eel
--4 is a kind of eel