いし くさび石 LinksSentence search for くさび石Sentence search for くさびいしSentence search for 楔石Kanji details for 石Edit in JMdict Noun1. keystoneSee also 要石Noun2. sphene; titaniteSee also チタン石Other forms楔石 【くさびいし】 Discussions Log in to talk about this word.