JMdict: 1748310

腹時計 【はらどけい】

  1. [n] one's internal clock
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
Abdomen, Belly, Stomach フク はら
Time, Hour とき, -どき
Plot, Plan, Scheme, Measure ケイ はか.る, はか.らう