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Meaning of glowworm

glow•worm

Pronunciation: (glō'wûrm"), [key]
— n.
  1. the wingless female or larva of the European beetle, Lampyris noctiluca, which emits a sustained greenish light.
  2. any of various other beetle larvae or wingless females that emit a glow rather than a flash of light.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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