motorbike
n. countable A2 Elementary US //ˈmoʊtɝˌbaɪk// UK //mˈəʊtəbˌaɪk// mo·tor·bike
n. a vehicle with two wheels and an engine. It is faster than a bicycle and you sit on it to ride.
n. a two-wheeled motor vehicle, typically larger and more powerful than a moped or scooter.
He rides his motorbike to work every morning.
The courier wove his motorbike through the heavy city traffic to deliver the documents on time.
While cars offer more protection from the elements, many commuters prefer a motorbike for its fuel efficiency and ability to navigate narrow urban lanes during peak hours.
From motor + bike.
Usage
Commonly used in British English; 'motorcycle' is more frequent in American English and formal contexts.