prison camp
From Longman Dictionary of Contemporary EnglishRelated topics: Jail & punishmentprison campˈprison camp noun [countable] SCJa special prison in which prisoners of war are keptExamples from the Corpusprison camp• I was in a friendly country and was less effectively guarded than I ever would be in a prison camp.• This is nothing like the bucolic prison camp where his half-sister Carmella is held.