Beauty Sleep Definition

noun

A period of regular restful sleep, especially when attained by going to bed early.

American Heritage

Any extra sleep regarded as necessary to sustain a healthy, attractive appearance.

Webster's New World

The definition of beauty sleep is an expression used to explain that a person will be more rested, potentially more beautiful, if they go to bed early or get extra sleep.

An example of a beauty sleep is when a mom goes to bed early so she can look more rested in the morning.

YourDictionary

Beauty sleep is defined as sleep before midnight, or any extra resting time.

An example of beauty sleep is falling asleep at 9 p.m.

YourDictionary

(idiomatic) Sleep before midnight, on the belief that early sleep hours conduce to health and beauty.

Wiktionary

Other Word Forms of Beauty Sleep

Noun

Singular:

beauty sleep

Plural:

beauty sleeps

Origin of Beauty Sleep

From the belief that such sleep helps preserve an attractive and youthful appearance

From American Heritage Dictionary of the English Language, 5th Edition