A wheeled vehicle with small wheels and a low-powered gasoline engine geared to the rear wheel WordNet 3.0 & Open English WordNet

A scooter is a motorcycle with an underbone or step-through frame, a seat, a transmission that shifts without the operator having to operate a clutch lever, a platform for the rider's feet, and with a method of operation that emphasizes comfort and fuel economy. Wikipedia

A two-wheeled motorized vehicle with a step-through frame Wikipedia Disambiguation

A motorcycle with a step-through frame and a platform for the rider's feet, ridden seated Wikipedia Disambiguation

A small motorcycle with a step-through frame and a platform for the feet. OmegaWiki

A small motorcycle or moped with a step-through frame. Wiktionary

Small motorcycle or moped. Wiktionary (translation)

A motorscooter; a small motorcycle or moped with a step-through frame. Wiktionary