sleep Definition in the Cambridge English Dictionary

Definition of “sleep” - English Dictionary

Definition of "sleep" - American English Dictionary

See all translations

sleepnoun [U]

 us   /slip/
the ​restingstate in which the ​body is not ​active and the ​mind is ​unconscious: I usually ​sit up in ​bed and ​watch the TV ​news before going to sleep.

sleepverb [I/T]

 us   /slip/ (past tense and past participle slept  /slept/ )
to be in a ​restingstate in which the ​body is not ​active and the ​mind is ​unconscious: [I] I was too ​excited to sleep much that ​night. [T] The ​boat sleeps four (= has ​space for four ​people to sleep)comfortably.
Phrasal verbs
(Definition of sleep from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definition of "sleep" - British English Dictionary

See all translations


uk   us   /sliːp/

sleep noun (NOT AWAKE)

B1 [U] the ​restingstate in which the ​body is not ​active and the ​mind is ​unconscious: I must get some sleep - I'm ​exhausted.
See also
get/go to sleep B1 to ​succeed in sleeping: I couldn't get to sleep at all last ​night I was so ​worried. You'll ​find that ​yourbaby usually goes to sleep after a ​feed.B1 [C] a ​period of sleeping: UK You must be ​tired after all that ​driving - why don't you have a little sleep? He fell into a ​deep sleep. You'll ​feelbetter after a good night's sleep.
More examples

sleep noun (SUBSTANCE)

[U] informal a ​yellowishsubstance sometimes ​found in the ​corners of the ​eyes after sleeping


uk   us   /sliːp/ (slept, slept)
A1 [I] to be in the ​state of ​rest when ​youreyes are ​closed, ​yourbody is not ​active, and ​yourmind is ​unconscious: I couldn't sleep because of all the ​noise next ​door. I slept late on ​Sundaymorning. How can Jayne sleep at ​night with all those ​worries on her ​mind! We had ​dinner with Ann and Charles and slept the ​night there (= at ​theirhome). [T] If a ​vehicle, ​tent, etc. sleeps a ​particularnumber of ​people, it ​provides enough ​space or ​beds for that ​number of ​people to be ​able to sleep in it: The ​tent sleeps four ​comfortably.sleep like a log informal to sleep very well: I went to ​bed early and slept like a ​log.sleep on sth C2 to ​delay making a ​decision about something ​important until the next ​day so that you have ​time to ​consider it ​carefully: Can I sleep on it, and ​tell you my ​decisiontomorrow?sleep rough UK to sleep ​outside because you have no ​home and no ​money: Hundreds of ​kids are sleeping ​rough on the ​streets of the ​capital.
More examples
adjective uk   us   /ˈsliː.pɪŋ/
She ​lookedlovingly at the sleeping ​child.
See also
(Definition of sleep from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
Translations of “sleep”
in Korean 자다…
in Arabic يَنام…
in Malaysian tidur…
in French dormir…
in Russian спать…
in Chinese (Traditional) 睡覺, 睡覺,睡眠, 一段時間的睡眠…
in Italian dormire…
in Turkish uyumak…
in Polish spać…
in Spanish dormir…
in Vietnamese ngủ…
in Portuguese dormir…
in Thai หลับ…
in German schlafen…
in Catalan dormir…
in Japanese 眠る, 寝る…
in Chinese (Simplified) 睡觉, 睡觉,睡眠, 一段时间的睡眠…
in Indonesian tidur…
What is the pronunciation of sleep?
Add Cambridge dictionaries to your browser to your website
Word of the Day


to give someone knowledge or to train someone; to instruct

Word of the Day

Out of Africa
Out of Africa
by Colin McIntosh,
October 01, 2015
A recent discovery off the coast of the island of Taiwan, made by local fishermen, is causing scientists to re-examine their ideas about early humans. The skull of a male human, now nicknamed Penghu Man, was found to differ significantly from the skulls of the Homo Erectus species previously known in the

Read More 

face training noun
face training noun
October 05, 2015
a system of facial exercises designed to tone the facial muscles and improve the skin

Read More