belt — A belt is a strip of leather or cloth that you fasten round your waist.
cincture — something that encircles or surrounds, esp a belt, girdle, or border
circle — A circle is a shape consisting of a curved line completely surrounding an area. Every part of the line is the same distance from the centre of the area.
compass — A compass is an instrument that you use for finding directions. It has a dial and a magnetic needle that always points to the north.
girdle — a lightweight undergarment, worn especially by women, often partly or entirely of elastic or boned, for supporting and giving a slimmer appearance to the abdomen, hips, and buttocks.