Definition of beauty sleep noun from the Oxford Advanced Learner's Dictionary


beauty sleep

BrE BrE//ˈbjuːti sliːp//
; NAmE NAmE//ˈbjuːti sliːp//
[uncountable] (humorous) Good health
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enough sleep at night to make sure that you look and feel healthy and beautiful See related entries: Good health
See the Oxford Advanced American Dictionary entry: beauty sleep