[fahyuh r-wurm]


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

Nearby words

  1. fireweed,
  2. firewire,
  3. firewood,
  4. firework,
  5. fireworks,
  6. firie,
  7. firing,
  8. firing glass,
  9. firing line,
  10. firing line, on the

Origin of fireworm

First recorded in 1560–70; fire + worm Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019