みやまがわとんぼMeaningsNoun1. Calopteryx cornelia (species of damselfly) (Usually kana)Other spellings深み山やま川がわ蜻蛉とんぼUsually written in kanaOther readingsミヤマガワトンボKanji in other spellings深deep山mountain川river蜻dragonfly蛉moon moth