Definition of: cingulum

(sing′gyə·ləm) noun plural ·la (-lə) Zool.
A band, zone, or girdle, as of the carapace of an armadillo, of a tooth near the gum, the clitellum of an earthworm, or a raised spiral line on certain univalves. [<L <cingere gird]
—cin·gu·late (sing′gyə·lit, -lāt) or cin′·gu·lat′ed adjective