ˈ ̷ ̷ˌ ̷ ̷ noun
Etymology: joint (I) + worm
1. : the larva of any of several small chalcid flies of the family Eurytomidae and genus Harmolita which attack the stems of grain and cause swellings like galls usually at or just above the first joint
2.
[so called from its jointed appearance]
: bamboo worm