Words using 螢

• 蛍 ほたる — firefly (Luciola cruciata)
• 蛍光灯 けいこうとう — fluorescent lamp
• 蛍光 けいこう — fluorescence
• 蛍火 ほたるび — glow of a firefly
• 蛍石 ほたるいし — fluorite
• 蛍雪 けいせつ — diligence in studying (e.g. continuing to study even in such poor light as offered by a firefly or that reflected by snow)
• 蛍光ペン けいこうペン — highlighter (pen)