1. (n.) One who is confined in a prison.

2. (n.) A person under arrest, or in custody, whether in prison or not; a person held in involuntary restraint; a captive; as, a prisoner at the bar of a court.

POW accused cageling captive chain gang con convict correspondent defendant detainee detenu ex-convict gaolbird internee jailbird libelee lifer parolee political prisoner prisoner of war respondent stir bird suspect ticket-of-leave man ticket-of-leaver trusty two-time loser