Jail (noun)

1. A building for the confinement of persons held in lawful custody, especially for minor offenses or as a preliminary to trial or punishment.
2. A state of confinement or captivity.
3. A prison.

Origin:

Middle english: from old french jaille, gaiole, from latin caveola, diminutive of cavea "cage".

Examples:

1. He was sentenced to a year in jail.
2. The jail was overcrowded.
3. The jail had poor conditions.
4. He was arrested and taken to jail.
5. He was released from jail on bail.