1. A group of civilians called upon by a sheriff or other law enforcement official to assist temporarily in preserving the peace or pursuing and arresting a fugitive. Also called posse comitatus.
2. A search party.
3. A gang involved in crimes such as running guns and illegal narcotics trafficking.
4. Slang A group of friends or associates.
[Short for POSSE COMITATUS.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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