noun
pen case; pencil case
A container for pens, pencils, and other writing instruments. Often used interchangeably with 筆箱 (ふでばこ), though ペンケース is more common for soft or zippered cases.
See also: 筆箱 (ふでばこ)
新しいペンケースを買った。
I bought a new pen case.
ペンケースにペンをしまってください。
Please put your pens in the pen case.