D defs.my
Entry 2 senses Webster, 1913

Doublure

· Dou·blure · IPA
01 n. The lining of a book cover, esp. one of unusual sort, as of tooled leather, painted vellum, rich brocade, or the like.
  1. 1.
    The lining of a book cover, esp. one of unusual sort, as of tooled leather, painted vellum, rich brocade, or the like.(Bookbinding)
  2. 2.
    The reflexed margin of the trilobite carapace.(Paleon.)