firefly (Luciola cruciata), lightning bug, glowworm

fluorescent lamp, fluorescent light, person who is slow to react...

fluorescent lamp, fluorescent light, person who is slow to react...

fluorescence

firefly watching, firefly catching

glow of a firefly, nearly extinguished fire, embers

fluorite, fluorspar

bellflower

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

glowworm

Scirpus hotarui (species of bulrush)

dayflower

smokers forced to smoke outside, firefly tribe

Pidorus glaucopis (species of moth)

firefly watching, firefly catching

glowworm

glowworm

Hotaria parvula (species of firefly)

Hotaria parvula (species of firefly)

sea firefly (Vargula hilgendorfii), seed shrimp

flying firefly

Auld Lang Syne, Hotarunohikari

firefly squid (Watasenia scintillans), sparkling enope squid

fluorescent substance

fluorescent screen

fluorescent tube

fluorescent color, fluorescent colour

highlighter (pen)

the fruit of diligent study

fluorescent ink