きっこう 亀甲 LinksSentence search for 亀甲Sentence search for きっこうSentence search for きこうSentence search for 龜甲Kanji details for 亀 and 甲Edit in JMdict Noun1. tortoise shellSee also 亀の甲Other forms亀甲 【きこう】、龜甲 【きっこう】、龜甲 【きこう】Notes龜甲: Out-dated kanji or kanji usage. 龜甲: Out-dated kanji or kanji usage. Discussions Log in to talk about this word.