a person or thing that raids.
a commando, ranger, or the like, specially trained to participate in military raids.
a light, fast warship, aircraft, etc., used in such a raid.
a person who seizes control of a company, as by secretly buying stock and gathering proxies.
Informal. a person who works within an organization for the purpose of gathering evidence of wrongdoing.

Origin of raider

First recorded in 1860–65; raid + -er1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for raider

Historical Examples of raider

  • Anton had been with me three years when this raider appeared.

    The Night Riders

    Ridgwell Cullum

  • "Boy Scouts of the Sea," watch us do our partIf a raider or a sub.

    With the Colors

    Everard Jack Appleton

  • Then she sat down at Mr. Raider's desk, and drew a pad of paper toward her.

    Prudence Says So

    Ethel Hueston

  • I am a minister's daughter, Mr. Raider, I can't talk about people's troubles.

    Prudence Says So

    Ethel Hueston

  • "We called her 'the Raider,'" says this friend, who was also a warm admirer.

    Woman's Work in the Civil War

    Linus Pierpont Brockett

Word Origin and History for raider

1863, agent noun from raid (v.). A word from the American Civil War.

Online Etymology Dictionary, © 2010 Douglas Harper