Doublure

A binder’s term, meaning that the paste-down (or inside lining of the covers) is not of paper but of leather, usually decorated.

Danish: Doublure, opklæbede forsats
Dutch: Doublure, binnenspiegel
French: Doublure
German: Doublure
Italian: Contropiatto
Spanish: Contratapa
Swedish: Foder, pärmfoder