やむし 矢虫 LinksSentence search for 矢虫Sentence search for やむしSentence search for ヤムシKanji details for 矢 and 虫Edit in JMdict Noun1. arrow worm (any worm of phylum Chaetognatha)Usually written using kana alone, See also 毛顎動物Other formsヤムシ Discussions Log in to talk about this word.