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. (Zoöl.) A narrow circle of some distinct color on a surface or round an organ.