Annulet
Annulet ({not transcribed}) , noun
[Dim. of annulus.]
1.
A little ring. — Tennyson
2.
(Architecture) 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.
3.
(Heraldry) A little circle borne as a charge.
4.
(Zoology) A narrow circle of some distinct color on a surface or round an organ.