Why this word is great
GLOWWORM — [Noun] A bioluminescent larva or wingless female beetle (families Phengodidae, Lampyridae) or gnat (genus Arachnocampa), its abdomen a living lantern in the dark. From Middle English glouworm, equivalent to glow ("to emit light") + worm ("creature, larva"). Compare German Glühwurm ("glowworm"). Unlike "firefly" (a winged adult, flashing its Morse code of desire) or "lightning bug" (a child’s colloquialism for summer’s flickering ballet), the glowworm is a patient, grounded radiance. It is a single ember in the damp undergrowth, a fallen star caught in the roots, or the last candle in a miner’s lamp—proof that light persists even in the blind, creeping things of the world.