Fleet (noun)

1. A group of ships or vehicles under one command, especially a group of warships.
2. A number of vehicles or vessels owned or operated by a company or organization.

Origin:

Middle english: from old english flēot "a flying, a fleet", of germanic origin; related to dutch vloot and german flotte.

Examples:

1. The navy has a fleet of ships.
2. The company has a fleet of trucks.
3. The fleet of cars on the highway.
4. The fleet of boats on the river.
5. The fleet of aircraft in the sky.