Annulus
From BiblePortal Wikipedia
Annulus [1]
(1): (n.) The solid formed by a circle revolving around a line which is the plane of the circle but does not cut it.
(2): (n.) A ring; a ringlike part or space.
(3): (n.) A space contained between the circumferences of two circles, one within the other.
(4): (n.) Ring-shaped structures or markings, found in, or upon, various animals.
