Definitions

1. noun

The clitellum is a specialized region found in the anterior part of the body of a clitellate annelid, such as an earthworm. It is involved in the production of cocoons.

“During reproduction, the earthworm’s clitellus secretes mucus to form a protective cocoon around its eggs.”

2. noun

A clitellate, or an annelid that belongs to the class Clitellata.

“The clitellus of the earthworm is a key characteristic in identifying it as a member of the clitellate order.”