蠶紙

蚕纸
cánzhǐ
paper on which silkworm lays its eggs

CEDICT

paper with silkworm eggs

Wiktionary

給蠶產卵的紙，一般為桑樹纖維所製。

重編國語辭典

Entry Composition

1 蠶 cán silkworm
2 紙 zhǐ classifier for documents, letters etc

classifiers: 張, 沓