JMdict: 1352020

鐘乳洞 【しょうにゅうどう】

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

Kanji Meanings On Readings Kun Readings Grade
鐘 Bell, Gong, Chimes ショウ かね
乳 Milk, Breasts ニュウ ちち, ち 6
洞 Den, Cave, Excavation ドウ ほら