Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “sleep”

See all translations

sleep

noun
 
 
/sliːp/
B1 [U, no plural] the state you are in when you are sleeping, or a period of time when you are sleeping: I haven't had a good night's sleep (= a long sleep at night) for weeks. You need to go home and get some sleep. It took me ages to get to sleep (= to succeed in sleeping). He died peacefully in his sleep.Sleep and sleeping
go to sleep B1 to begin to sleep: Babies often go to sleep after a feed.Sleep and sleeping informal If part of your body goes to sleep, you cannot feel it: I'd been sitting on my feet and they'd gone to sleep.Pain and painful
put sth to sleep to kill an animal that is very old or sickKillingMurder and attempted murder
could do sth in your sleep to be able to do something very easilySkilled, talented and able
Translations of “sleep”
in Korean 잠, 수면, 수면 시간…
in Arabic نَوْم…
in Portuguese sono…
in Catalan son…
in Japanese 眠り, 睡眠, 眠っている時間…
in Italian sonno, dormita…
in Chinese (Traditional) 睡覺, 睡覺,睡眠, 一段時間的睡眠…
in Russian сон…
in Turkish uyku…
in Chinese (Simplified) 睡觉, 睡觉,睡眠, 一段时间的睡眠…
in Polish sen…
(Definition of sleep noun from the Cambridge Learners Dictionary © Cambridge University Press)
Add Cambridge dictionaries to your browser to your website

Definitions of “sleep” in other dictionaries

Word of the Day

luck

the force that causes things, especially good things, to happen to you by chance and not as a result of your own efforts or abilities

Word of the Day

A certain je ne sais quoi: French words and phrases used in English

by Liz Walter,
January 21, 2015
It is an odd irony that the more sophisticated your use of English is, the more likely you are to use French words and phrases. Or, to be more accurate, ones you know to be French – words such as ballet, au pair, abattoir, fiancé, café, and restaurant are so entrenched in

Read More 

micro pig noun

January 26, 2015
an extremely small pig, bred to be a pet Micro pigs have become popular pets recently, with famous owners including Victoria Beckham, Paris Hilton and Olympic diver, Tom Daley.

Read More