Top Definition
(KOYN eh sewer) A person who is unable to distinguish between the best of something and the most expensive of it; a connoisseur of the costly
coiniseur: "When I was in New York, I tasted the most delicious hamburger. It cost $120!"

regular human: "You're a real coiniseur."
by CreativePotato February 21, 2008

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The Urban Dictionary Mug

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