detention centre

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A facility in which people are detained (held in custody); a jail.
• noun Australia 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.
• noun A concentration camp.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a large cell where prisoners (people awaiting trial or sentence or refugees or illegal immigrants) are confined together temporarily