筒 — “Cylinder / Pipe / Tube / Gun Barrel” in Japanese

Master (高手)とう, つつ

Radical ⽵ · radical 118 The building block this kanji is filed under

“Cylinder / Pipe / Tube / Gun Barrel” in Japanese is 筒, read tou, tsutsu (とう, つつ). It is a Jōyō kanji taught in Japanese secondary school (junior & senior high) — the 高手 · Master tier beyond the grade 1–6 Kyōiku set, and appears in words such as 筒 (tube).

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What does 筒 mean?

Full details, readings & example

Kanji	筒
Meaning	Cylinder / Pipe / Tube / Gun Barrel
Readings	とう, つつ
Grade	Master (高手 · secondary school)
Curriculum	Jōyō kanji · Japanese secondary school (JLPT N1–N2)
Example	筒 (tube)

How to read 筒

筒 is read tou (とう) or tsutsu (つつ) depending on the word.

Words with 筒

封筒

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Kanji read the same way as 筒

Same sound, different character — the classic trap. Compare them side by side:

Updated: 2026-08-28