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bluefin tuna

American  
[bloo-fin] / ˈbluˌfɪn /

noun

  1. a large tuna, Thunnus thynnus, common in temperate seas.

Etymology

Origin of bluefin tuna

First recorded in 1920–25; blue + fin 1

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.