蚕纸

蠶紙
cánzhǐ
paper on which silkworm lays its eggs

CEDICT

paper with silkworm eggs

Wiktionary

给蚕产卵的纸，一般为桑树纤维所製。

重編國語辭典

Entry Composition

1 蚕 cán silkworm
=2 纸 zhǐ variant of 纸 zhǐ
=2 纸 zhǐ classifier for documents, letters etc

classifiers: 張, 沓