tropical American prickly pear of Jamaica
"The local market sold fresh tuna, a type of tropical American prickly pear native to Jamaica."
New Zealand eel
"In some regions, the term tuna is mistakenly used to refer to a large New Zealand eel."
Any of several species of fish of the genus Thunnus in the family Scombridae.
"The local market offered fresh tuna and other exotic fruits alongside their traditional dishes."
The prickly pear, a type of cactus native to Mexico in the genus Opuntia.
In plain English: Tuna is a popular type of saltwater fish that people often eat canned as sandwiches or salad ingredients.
"For lunch, I made a sandwich with tuna and lettuce on whole wheat bread."
Usage: Tuna refers primarily to saltwater fish from the genus Thunnus, not the prickly pear cactus despite sharing the same name. When ordering food or discussing seafood, use this term for the oily bluefish rather than any plant variety.
An eel-god, the son of Manga-wai-roa.
"In Māori mythology, Tuna is revered as an eel-god who was born to the deity Manga-wai-roa."
The word tuna entered English via United States Spanish as an alteration of atún, which traces back to Arabic and ultimately Ancient Greek, possibly originally referring to a darter because the fish swims quickly. It is also considered a doublet of the Italian loanword tonno.