まつかさがい 松毬貝 LinksSentence search for 松毬貝Sentence search for まつかさがいSentence search for マツカサガイKanji details for 松, 毬 and 貝Edit in JMdict Noun1. Pronodularia japanensis (species of freshwater mussel)Usually written using kana aloneOther formsマツカサガイ Discussions Log in to talk about this word.