vellum

US /ˈvel.əm/
UK /ˈvel.əm/
"vellum" picture
1.

prepared animal skin, typically calfskin, used as a material for writing, printing, or binding books, noted for its durability and smooth surface

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The ancient manuscript was written on vellum.
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She admired the intricate illustrations on the vellum pages.
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parchmentcalfskin
2.

a high-quality, smooth, and slightly translucent paper, often used for technical drawings or special documents, designed to imitate the appearance of animal vellum

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The architect printed the blueprints on heavy vellum paper.
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She used a fine-tipped pen to draw on the smooth surface of the vellum.
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vellum papertracing paper