An open-seated motor vehicle with handlebars instead of a steering wheel, and having two (or sometimes three) wheels.

(intransitive) To ride a motorcycle.

An enclosed passenger motor vehicle, a car, powered by an engine. / (rail transport, US) A self-propelled railway vehicle

(UK) A motorcycle. / (US) A small and light motorcycle.

To ride a motorbike; to travel by motorbike.

A procession of cars carrying VIPs, especially political figures.

(intransitive) To travel in a motorcade.

(nautical) Any vessel driven by an engine (either inboard or outboard), but especially a small one.

To ride in a motorboat. / (slang, intransitive, transitive) To press one's face between (another person's breasts); to press one's face between the breasts of (another person).

plural of motorboat