noun
A design or pattern embedded in paper, visible when held up to light; used in stamps, banknotes, official documents, etc.
この紙幣には透かしが入っている。
This banknote has a watermark.
noun
openwork; fretwork; pierced carving
Decorative technique where material is cut or carved to create openings; common in wood, metal, or stone crafts.
欄間には美しい透かし彫りが施されている。
The transom features beautiful openwork carving.
The noun form of the verb 透かす (to hold up to light, to look through, to make transparent), referring to something seen through or a design with openings.