noun Any of various luminous female beetles or beetle larvae of the families Phengodidae and Lampyridae, especially the larva or wingless grublike female of a firefly.
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.
He had murdered poor Thirle, stout and affable and trusting, simply because he was in the way.
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The Silicon Mage
She sensed a shifting somewhere in it, not far off, and remembered that there were abominations about, drawn to the smell of blood.
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The Silicon Mage
He felt tingly as a glowworm, and all the tiny hairs on his body were standing straight up.
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In Other Worlds
He had advanced to the door of the workshop, and was peering curiously within, into a cavern dimly lit by the little glowworm lamp, still burning on the lid of the chest.
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The Heretic's Apprentice
"Might be a kind of glowworm," said Jack.
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The Valley of Adventure