WordReference Random House Unabridged Dictionary of American English © 2025
joint•worm
( joint′wûrm′),USA pronunciation n.
- Insectsthe larva of any of several chalcid flies of the family Eurytomidae, esp. of the genus Harmolita, that feeds within the stems of grasses, often causing a gall near the first joint. Also called strawworm.
- joint + worm 1700–10
'jointworm' also found in these entries (note: many are not synonyms or translations):