Circumference /(?)/

Cir·cum·fer·ence

Circumference

n.
  1. The line that goes round or encompasses a circular figure; a periphery.
  2. A circle; anything circular.
    His ponderous shield . . . Behind him cast. The broad circumference Hung on his shoulders like the moon.
  3. The external surface of a sphere, or of any orbicular body.

Circumference

v. t.
  1. To include in a circular space; to bound. [Obs.]