Definition of "bluefin" [blue•fin]

• Bluefin tuna, a number of types of tuna characterised by their blue fins. (noun)

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• "First of all, selling a big bluefin is not as easy as catching one and running to the market."
• "More people who frequently eat sushi know that bluefin is endangered, and may be gone within a few years at the rate we consume them, than any other type of seafood."
• "I was really interested in finding out that more than just the bluefin is in danger."
• "Nobu promised to label bluefin as an endangered species on all of their menus, but subsequently changed tactics and cut off communications."
• "The results show that some species of tuna, particularly those that restaurants value for their firmer flesh and appealing look - such as bluefin akami and all bigeye tuna - have higher mercury levels than other species typically found in grocery stores."