ごかい 沙蚕 LinksSentence search for 沙蚕Sentence search for ごかいSentence search for 砂蚕Kanji details for 沙 and 蚕Edit in JMdict Noun1. ragworm; sandworm; clam worm (Hediste)Usually written using kana aloneOther forms砂蚕 【ごかい】Notes砂蚕: Irregular kanji usage. Discussions Log in to talk about this word.