n.
- A ship privately owned and crewed but authorized by a government during wartime to attack and capture enemy vessels.
- The commander or one of the crew of such a ship.
To sail as a privateer.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.