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fireworm

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WordReference Random House Unabridged Dictionary of American English © 2026

fire•worm n.

Insectsthe larva of any of several moths, as Rhopobota naevana (black-headed fireworm,) which feeds on the leaves of cranberries and causes them to wither.
Insectsglowworm.

fire + worm 1560–70

'fireworm' also found in these entries (note: many are not synonyms or translations):

black-headed fireworm

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