Motorboat (noun)

1. A boat that is powered by an internal combustion engine or an electric motor.
2. A small, fast-moving boat powered by an internal combustion engine.

Origin:

Early 20th century: from motor + boat.

Examples:

1. They spent the day cruising around the lake in a motorboat.
2. The motorboat was equipped with a powerful engine.
3. He rented a motorboat to take the family out for a day on the water.
4. The motorboat was able to reach high speeds on the water.
5. The sound of the motorboat could be heard from miles away.