Meaning of jointworm

joint•worm

Pronunciation: ( joint'wûrm"), [key]
— n.
  1. the 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
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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