There are 2 main definitions of tuna in English:

tuna1

Syllabification: tu·na
Pronunciation: /ˈt(y)o͞onə
 
/

noun (plural same or tunas)

1A large and active predatory schooling fish of the mackerel family. Found in warm seas, it is extensively fished commercially and is popular as a game fish.
More example sentences
  • The aim is to reduce the incidental catch of gamefish like marlin while allowing stocks of swordfish, oceanic sharks and tuna to replenish themselves.
  • Tom Fitzgerald said fish landings were down on the previous year because of the ban on tuna drift net fishing and severe restrictions on quotas of other species.
  • As a rule, I avoid lumps of grilled tuna: it's fish for people who don't like eating fish, or just don't like eating.
1.1 (also tuna fish) The flesh of the tuna as food, usually canned.
More example sentences
  • The weakening of the currency has encouraged the country's non-oil exports such as tuna fish, fresh fish, and vegetables.
  • We sometimes eat black beans and tuna fish from the can for dinner.
  • Stein's first course of raw tuna fish starter marinated with passion fruit and green chilli goes perfectly with the Tower Chardonnay he's bought.

Origin

late 19th century: from American Spanish, from Spanish atún.

Definition of tuna in:

There are 2 main definitions of tuna in English:

tuna2

Syllabification: tu·na
Pronunciation: /ˈt(y)o͞onə
 
/

noun

North American
1The edible fruit of a prickly pear cactus.
2A cactus that produces tuna, widely cultivated in Mexico.

Origin

mid 16th century: via Spanish from Taino.

Definition of tuna in: