Glowworm

Part of speech: noun (n.)

A coleopterous insect of the genus Lampyris; esp., the wingless females and larvæ of the two European species (L. noctiluca, and L. splendidula), which emit light from some of the abdominal segments. Like a glowworm in the night, The which hath fire in darkness, none in light. Shak.