privateer
/ˌpɹaɪ.vəˈtɪə/noun
High School
1
A privately owned warship that acted under a letter of marque to attack enemy merchant ships and take possession of their cargo.
2
An officer or any other member of the crew of such a ship; a government-sanctioned pirate.
3
An advocate or beneficiary of privatization of a government service or activity.
4
A private individual entrant into a race or competition who does not have the backing of a large, professional team.
5
A racing team that is not a subsidiary of a large conglomerate, or automotive or vehicle manufacturer.