Assertion: caterpillar's organ | /r/Synonym | osmeteria
Facets:
Source sentences:
text: If the "evil eye" treatment fails to scare off predators, spicebush swallowtail caterpillars pull out the really big guns: They rear up and whip out bright yellow retractable hornlike organs (called osmeteria) located behind their head which bear a chemical repellent.
text: This organ is called an osmeterium.