D defs.my
Entry 1 sense Webster, 1913

Vellum

· Vel·lum · IPA /ˈvɛləm/
01 n. A fine kind of parchment, usually made from calfskin, and rendered clear and white, -- used as for writing upon, and for binding books.
  1. 1.
    A fine kind of parchment, usually made from calfskin, and rendered clear and white, -- used as for writing upon, and for binding books.
Phrases & compounds
Vellum cloth — a fine kind of cotton fabric, made very transparent, and used as a tracing cloth.