JMdict: 1275860

口火 【くちび】

  1. [n] fuse; pilot light
  2. [n] cause (of a war, argument, revolt, etc.); origin; trigger
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Kanji in this word:

Kanji Meanings On Readings Kun Readings Grade
口 Mouth コウ, ク くち 1
火 Fire カ ひ, -び, ほ- 1