ホタルイじ字FuriganaMeanings1nounScirpus hotarui; a species of bulrushusually written using kana aloneA specific species of bulrush native to East Asia. The name is usually written in katakana.ホタルイは湿しっ地ちに生はえる植しょく物ぶつです。Hotarui is a plant that grows in wetlands.