Wine produced in the Entre-Deux-Mers region of Bordeaux in south-western France. Now: specifically a dry, white wine produced in this region.
The Appellation d'Origine Contrôlée of Entre-Deux-Mers was modified in 1953 to classify white wines only.
Mid 19th century; earliest use found in The Times. From Entre-Deux-Mers, the name of a region in the Bordeaux wine region of France from entre between + deux two + mers, plural of mer sea, after Old Occitan Entre doas mars, lit. ‘between two seas’; compare post-classical Latin Inter duo maria.