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)


  • And their clitellum, a smooth band that all worms have, is in a different location.

    NYT > Home Page

  • Let us be like that famous Don Juan of the animal kingdom, the ten-hearted earthworm, and cultivate as many loves as our biology (or clockworks) will allow - then secrete a viscid egg sac into our clitellum and slide that junk right off our segmented, slithery body.


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  • OED: "The raised band encircling the body of earth-worms towards the middle."

    October 15, 2008