蛍 - lightning-bug, firefly

fluorescent lamp; fluorescent light

firefly (Luciola cruciata); lightning bug; glowworm

diligence in studying (e.g. continuing to study even in such poor light as offered by a firefly or that reflected by snow); diligent study

fluorescent substance

dayflower

fluorescent whitening agent; fluorescent brightener; fluorescent bleach

empty vessels make the most noise; the silent firefly burns with more passion than the crying cicada

Lithospermum zollingeri (violet species)

Auld Lang Syne

firefly watching

fluorescent paint

the fruit of diligent study