Cingulum

[siŋgjulәm]

(noun.) (anatomy) an encircling structure (as the ridge around the base of a tooth).

Typed by Avery--From WordNet

(n.) A distinct girdle or band of color; a raised spiral line as seen on certain univalve shells.

(n.) The clitellus of earthworms.

(n.) The base of the crown of a tooth.

Inputed by Gretchen

n. the girdle of an alb.

Inputed by Allen