from The American Heritage® Dictionary of the English Language, 4th Edition
- transitive v. To question to obtain knowledge or intelligence gathered especially on a military mission.
- transitive v. To instruct (a government agent, for example) not to reveal classified or secret information after employment has ceased.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To question someone after a military mission in order to obtain intelligence.
- v. To question someone, or a group of people, after the implementation of a project in order to learn from mistakes etc.
- v. To inform subjects of an experiment about what has happened in a complete and accurate manner.
from the GNU version of the Collaborative International Dictionary of English
- v. to interrogate (a person) who has recently experienced an event, to obtain information about that experience; -- used especially of military pilots or diplomatic agents who have just returned from a mission.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. put someone through a debriefing and make him report
de- + brief. (Wiktionary)