monocycle

Etymology
, thus literally "one wheel".

Noun



 * 1) A unicycle or monowheel; often specifically a unicycle with the rider seated inside the wheel.
 * 2)  An aromatic compound containing a single ring.
 * 3)  The first derivative of a Gaussian, often used as an impulse signal.

Etymology
From.

Noun

 * 1) unicycle (one-wheeled pedaled cycle)