onionskin

A thin, strong, translucent paper.

A kind of paper: so called from its thinness, translucency, and finish, in which respects it resembles the skin of an onion.

A kind of thin but strong translucent paper with a glossy finish.

A thin, strong, light, translucent paper; used especially for making carbon copies

a thin strong lightweight translucent paper used especially for making carbon copies