Circumference

Circumference
To include in a circular space; to bound. [Obs.] Sir T. Browne.

Circumference
A longer name for the perimeter of, or distance around, a circle—it is the product of [pi] and the diameter of the circle.

Circumference
When you're coming and the chick is kneeling and spins in a circle underneath you, such that you create a circumference on her body.

Circumference
its when you jizz in a circle
* These videos are coming directly from Youtube, they may or may not be most relevant to the word "Circumference"