A facility in which people are detained (held in custody); a jail.
An immigration detention facility; a facility in which people who have attempted to enter Australia without prior authorisation are detained, pending a decision on whether they are to be accepted as refugees or returned to their country of origin.
A concentration camp.
A secure residential facility for young people, often termed juvenile delinquents, awaiting court hearings and/or placement in long-term care facilities and programs.