I. ˈrādə(r) noun
( -s )
1. : one that raids : one that leads or participates in a raid
2. : a fast unarmored lightly armed ship designed to capture or destroy merchant shipping — called also commerce raider
3. : an airplane engaged in raiding
most of the raiders were two-engined fighter-bombers — Newsweek
4. : a member of a battalion (as of United States Marines) specially trained for close-range fighting — compare commando , ranger
II. noun
: one that attempts a usually hostile takeover of a business corporation
corporate raiders