JMdict: 1637580

岩穴 【いわあな】

  1. [n] rock cave; rock cavern
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Kanji in this word:

Kanji Meanings On Readings Kun Readings Grade
岩 Boulder, Rock, Cliff ガン いわ 2
穴 Hole, Aperture, Slit, Cave, Den ケツ あな 6