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 Grade
Abdomen, Belly, Stomach フク はら 6
Time, Hour とき, -どき 2
Plot, Plan, Scheme, Measure ケイ はか.る, はか.らう 2