penitentiary

(US) A state or federal prison for convicted felons; (loosely) a prison.

A priest in the Roman Catholic Church who administers the sacrament of penance.

An officer in some dioceses since 1215, vested with power from the bishop to absolve in cases reserved to him.

An office of the papal court which examines cases of conscience, confession, absolution from vows, etc., and delivers decisions, dispensations, etc.; run by a cardinal called the Grand Penitentiary who is appointed by the pope.

(no longer used) One who prescribes the rules and measures of penance.

(no longer used) A small building in a monastery, or a part of a church, where penitents confessed.

(no longer used) One who does penance.

Of or relating to the punishment of criminals.

Of or relating to penance; penitential.