JMdict: 1592520

蛍火 【ほたるび】

  1. [n] glow of a firefly
  2. [n] nearly extinguished fire; embers
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Kanji in this word:

Kanji Meanings On Readings Kun Readings Grade
蛍 Lightning-bug, Firefly ケイ ほたる
火 Fire カ ひ, -び, ほ- 1