joint·​worm ˈjȯint-ˌwərm How to pronounce jointworm (audio)
: the larva of any of several small chalcid wasps (genus Tetramesa synonym Harmolita) that attacks the stems of grain-producing plants (as wheat or barley) and causes swellings like galls at or just above the first joint

Word History

First Known Use

1851, in the meaning defined above

Time Traveler
The first known use of jointworm was in 1851

Dictionary Entries Near jointworm

Cite this Entry

“Jointworm.” Dictionary, Merriam-Webster, Accessed 6 Dec. 2023.

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