noun
chikenshi; grey cardboard from recycled paper
A specific type of grey cardboard made from recycled paper, often used for packaging or stationery. The term is a proper noun-like product name.
この箱は地券紙でできている。
This box is made of chikenshi.
地券紙は再生紙から作られる灰色の板紙です。
Chikenshi is a grey cardboard made from recycled paper.
The term 地券紙 likely derives from 地券 (chiken, 'land deed') and 紙 (shi, 'paper'), possibly because this type of cardboard was originally used for land certificates or similar documents. The exact historical derivation is uncertain.