clitellum
/klaɪˈtɛləm/
noun
- A thickened, glandular band on the body of an earthworm or leech that secretes a cocoon for eggs.
- The earthworm's clitellum is easy to see as a lighter, swollen ring near its head.
- Scientists study the clitellum to learn more about worm reproduction and development.
- During reproduction, the clitellum produces a mucus cocoon that protects the eggs.