King's Kung-Fu& Tai Chi

Japanese symbol for “cog”

Romaji: ha
tooth; teeth

In Japanese, cog is , read (ha).

Before using these characters for a tattoo, check them with a native speaker. Dictionary words often have several meanings, and the right choice depends on context.

Meanings

  1. n tooth; teeth
  2. n tooth (of a comb, saw, etc.); cog
  3. n support (of a geta)

Written forms: . Readings: .

Kanji and stroke order

tooth, cog
on: シ
kun: よわい、は、よわ.い、よわい.する
12 strokes · JLPT 2

Other Japanese words for “cog”

WordReadingMeaning
はぐるま hagurumacog (in an organization, company, etc.); cog in the machine
ほぞ hozotenon; cog; pivot

Related words

Words that share a kanji.

WordReadingMeaning
しか shikadentistry
はどめ hadomebrake; drag; skid
むしば mushibatooth decay; decayed tooth; dental cavity
はぐるま hagurumagear; cogwheel
はブラシ haburashitoothbrush
はいしゃ haishadentist

Data: JMdict (CC BY-SA 4.0); KANJIDIC2 (CC BY-SA 4.0); KanjiVG (CC BY-SA 3.0); wordfreq (CC BY-SA 4.0 (data)). Retrieved 2026-10-22.