筒(つつ)

つつ
noun
tube; cylinder; pipe
tool
1. tube; cylinder; pipe
A hollow cylindrical object open at one or both ends, such as a tube, pipe, or barrel-like container.
I put the poster in a tube and mailed it.
I put water into a length of bamboo.
図面(ずめん)を丸(まる)めて筒(つつ)状(じょう)にし、傷(きず)まないように保管(ほかん)した。
I rolled the drawings into a tube shape and stored them so they wouldn't get damaged.

A hollow cylinder open at one or both ends — a tube, pipe, or barrel-like container. Used both on its own and as a compound element.

Common collocations

Usage

Unrelated to the homophone 〜つつ, a grammatical suffix meaning 'while doing.'