Etymology
Advertisement

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. 

Others are reading

Advertisement
Advertisement
Definitions of merlot

Merlot (n.)
black wine grape originally from the region of Bordeaux;
Merlot (n.)
dry red wine made from a grape grown widely in Bordeaux and California;
From wordnet.princeton.edu