Merlot

wiktionary

ref

From French, a diminutive of merle(“blackbird”).

etymonline

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merlot (n.)

grape variety used for producing red wine, by 1828, generally said to be from French merle "blackbird," from Latin merola, but the reason for the name being given to the grapes is obscure; perhaps from a supposed fondness of the birds for the grapes, or from the dark color of the wine made from it.