psychiatric hospital

A psychiatric hospital (also called, at various places and times, mental hospital or mental ward, historically often asylum, lunatic asylum, or madhouse), is a hospital specialising in the treatment of persons with mental illness. Psychiatric wards differ only in that they are a unit of a larger hospital.
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Noun
1. a hospital for mentally incompetent or unbalanced person
(synonym) mental hospital, mental institution, institution, mental home, insane asylum, asylum
(hypernym) hospital, infirmary
(hyponym) Bedlam, booby hatch, crazy house, cuckoo's nest, funny farm, funny house, loony bin, madhouse, nut house, nuthouse, sanatorium, snake pit