'clitellus' definitions:

Definition of 'clitellus'

From: GCIDE

clitellus \cli*tel"lus\ (kl[i^]*t[e^]l"l[u^]s), n. [NL., prob. fr. L. clitellae a packsadle.] (Zool.) A thickened glandular portion of the body of the adult earthworm, consisting of several united segments modified for reproductive purposes. [1913 Webster]