Definition of loony bin noun from the Oxford Advanced Learner's Dictionary


loony bin

BrE BrE//ˈluːni bɪn//
; NAmE NAmE//ˈluːni bɪn//
(old-fashioned, slang)
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a humorous and sometimes offensive way of referring to a hospital for people who are mentally ill
See the Oxford Advanced American Dictionary entry: loony bin