beauty sleep


noun Informal.

sleep before midnight, assumed to be necessary for one's beauty.
any extra sleep.

Origin of beauty sleep

First recorded in 1855–60
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for beauty sleep

beauty sleep


noun

informal sleep, esp sleep before midnight
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012