WordReference Random House Unabridged Dictionary of American English © 2020
web•worm (web′wûrm′),USA pronunciation n.
- Insectsthe larva of any of several moths, as Hyphantria cunea(fall webworm) or Loxostege similalis(garden webworm), which spins a web over the foliage on which it feeds.
- web + worm 1790–1800, American
'webworm' also found in these entries: