firefly

n type of winged insect that glows in the dark 萤火虫.

fire-escape, fire-extinguisher, fire-fighter, fire-guard, fire-irons, fire-lighter, fire-plug, fire-power, fire-raiser, fire-raising, fire-walker, fire-walking, fire-watcher, fire-water, firearm, fireball, firebrand, firecracker, firedamp (also damp), firedog, firelight, fireman, firemen, fireplace, fireproof, fireside, firewood, firework, firing, firing-line, firing-squad, firm, firmament, firmly, firmness, first, first aid, first and foremost, first balcony, first base,