annulet

n. [ Dim. of annulus. ] 1. A little ring. Tennyson. [ 1913 Webster ]

2. (Arch.) A small, flat fillet, encircling a column, etc., used by itself, or with other moldings. It is used, several times repeated, under the Doric capital. [ 1913 Webster ]

3. (Her.) A little circle borne as a charge. [ 1913 Webster ]

4. (Zool.) A narrow circle of some distinct color on a surface or round an organ. [ 1913 Webster ]