An"nu*let (#), n. [Dim. of annulus.]
1.
A little ring.
Tennyson.
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.
3. Her.
A little circle borne as a charge.
4. Zool.
A narrow circle of some distinct color on a surface or round an organ.
© Webster 1913.