any of several small insects that produce galls in plant tissues, such as the gall wasp and gall midge
WordReference Random House Unabridged Dictionary of American English © 2025
gall•fly
(gôl′flī′),USA pronunciation n., pl. -flies.
- Insectsany of various insects that deposit their eggs in plants, causing the formation of galls.
- gall3 + fly2 1815–25
Collins Concise English Dictionary © HarperCollins Publishers::
'gallfly' also found in these entries (note: many are not synonyms or translations):