sleep before midnight, assumed to be necessary for one's beauty.
any extra sleep.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use beauty sleep in a sentence
It’s particularly effective in the bedroom, where cool, clean air will help ensure you get plenty of high-quality beauty sleep.Skincare gifts that are actually worth the splurge | Rachel Feltman | November 18, 2021 | Popular-Science
He had had occasion to wake Bones from his beauty sleep before, but he had never been as bad as this.The Keepers of the King's Peace | Edgar Wallace
Let your concern for the herd be the first and last thought of the day, and then I'll get my beauty sleep this winter.Wells Brothers | Andy Adams
At any rate she might as well try to get a little beauty sleep before dressing to go to the Tosswills.What Timmy Did | Marie Adelaide Belloc Lowndes
I shall leave early, about the time you are getting your beauty sleep.The Gray Phantom's Return | Herman Landon
That's too bad for the General, that he has to be aroused out of his beauty sleep.Hookers | Richard F. Mann
British Dictionary definitions for beauty sleep
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