枢 — “Hinge / Pivot / Door” in Japanese

Master (高手)すう, しゅ, とぼそ, からくり

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“Hinge / Pivot / Door” in Japanese is 枢, read suu, shu, toboso (すう, しゅ, とぼそ, からくり). 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 中枢 (pivot/center).

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What does 枢 mean?

Full details, readings & example

Kanji	枢
Meaning	Hinge / Pivot / Door
Readings	すう, しゅ, とぼそ, からくり
Grade	Master (高手 · secondary school)
Curriculum	Jōyō kanji · Japanese secondary school (JLPT N1–N2)
Example	中枢 (pivot/center)

How to read 枢

枢 is read suu (すう) or shu (しゅ) or toboso (とぼそ) or karakuri (からくり) depending on the word.

Words with 枢

中枢

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Kanji read the same way as 枢

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

Updated: 2026-08-28