cingulum

noun

1. 1.The girdle of an alb.
2. 2.A collection of white matter fibers projecting from the cingulate gyrus to the entorhinal cortex in the brain, allowing for communication between components of the limbic system.
3. 3.A ridge that girdles the base of an upper molar tooth.
4. 4.A distinct girdle or band of color; a raised spiral line as seen on certain univalve shells.
5. 5.The clitellus of earthworms.