A circumference, a circle. Obsolete.

The line, real or imaginary, described in going round any area; the distance round; the compass, circumference, containing line or limits.

The circumference or outer surface of something, esp. the earth. Now rare.

The line that forms the encompassing boundary, esp. of anything of a rounded form; compass, circuit. spec. in Geometry. The curved line which…

The circuit or compass of a place, etc.

The circumference, bounds, or extent of a circular object. Also figurative. Now chiefly literary.

Circumference. Obsolete.

Circumference, circuit; orbit of a planet. Obsolete.

The circumference of a circle or a circular object; the perimeter; the distance around something; (also) an arc; an orbit. Now rare and archaic.