detention centre
noun [ C ] UK (US detention center) uk/dɪˈten.ʃən ˌsen.tər/ us/dɪˈten.ʃən ˌsen.t̬ɚ/
（青少年）管教所，教养所
a type of prison where young people can be kept for short periods of time
（非法移民）拘留所
a place where people who have entered a country without the necessary documents can be kept for short periods of time