from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A swollen, glandular, saddlelike region in the epidermis of certain annelid worms, such as the earthworm, that secretes a viscous fluid to form a cocoon for their eggs.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A glandular swelling in the epidermis of some annelid worms; it secretes a viscous fluid in which the eggs are deposited.
from The Century Dictionary and Cyclopedia
- n. In zoology, the saddle of an annelid, as the earthworm; a peculiar glandular ring around the body, resulting from the swelling and other modification of certain segments.
New Latin clītellum, sing. of Latin clītellae, packsaddle.(American Heritage® Dictionary of the English Language, Fourth Edition)