motor scooter definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a light motor vehicle resembling a scooter, having usually two small wheels with the driver seated over the engine and placing the feet in front resting on a floorboard
motor scooter definition by American Heritage Dictionary
A usually two-wheeled vehicle with small wheels and a low-powered gasoline engine geared to the rear wheel.