psychiatric hospital
US /saɪˌkiː.æ.trɪk ˈhɑː.spɪ.t̬əl/
UK /saɪˌkiː.æ.trɪk ˈhɑː.spɪ.t̬əl/

1.
a hospital for people with mental illness
:
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He was admitted to a psychiatric hospital for treatment.
•
The old building used to be a psychiatric hospital.