こたまがい 小玉貝 LinksSentence search for 小玉貝Sentence search for こたまがいSentence search for コタマガイKanji details for 小, 玉 and 貝Edit in JMdict Noun1. Gomphina melanegis (species of Venus clam)Usually written using kana aloneOther formsコタマガイ Discussions Log in to talk about this word.