JMdict: 1583560

不知火 【しらぬい】

  1. [n] phosphorescent light; mysterious lights on the sea; sea fire
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Kanji in this word:

Kanji Meanings On Readings Kun Readings Grade
Negative, Non-, Bad, Ugly, Clumsy フ, ブ 4
Know, Wisdom し.る, し.らせる 2
Fire ひ, -び, ほ- 1

Words often seen with this one: (experimental feature)

 (32), 艦長 (12), この (12),  (11),  (11), 護衛艦 (10)