やまとしじみ 大和蜆 LinksSentence search for 大和蜆Sentence search for やまとしじみSentence search for ヤマトシジミKanji details for 大, 和 and 蜆Edit in JMdict Noun1. Corbicula japonica (species of basket clam)Usually written using kana aloneOther formsヤマトシジミ Discussions Log in to talk about this word.