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sleep - definition and synonyms


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noun sleep pronunciation in British English /sliːp/
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  1. 1
    [uncountable] a natural state in which you are unconscious for a time and your body rests, especially for several hours at night

    Babies need a lot of sleep.

    get to sleep:

    I can’t get to sleep if there’s any noise.

    I woke up during the storm and couldn’t get back to sleep.

    get some/much/any sleep:

    You need to go home and get some sleep.

    without sleep:

    A night without sleep left him red-eyed and haggard.

    1. a.
      [only before noun] relating to sleep
  2. 2
    [singular] a period of time when you are sleeping

    Karen woke up from a long sleep and rubbed her eyes.

    have a sleep:

    I think I’ll have a sleep this afternoon.

    a good night’s sleep:

    I haven’t had a good night’s sleep for over a week.

    a deep/light sleep (=one that is difficult/easy to wake up from):

    She lay down and soon fell into a deep sleep.

  3. 3
    [uncountable] a substance that forms in the corner of your eyes when you are sleeping
  4. From our crowdsourced Open Dictionary
    go back to sleep to sleep again after waking up

    It's okay, go back to sleep.

    Submitted by Caleb Judy from United States on 29/10/2015


to fall over forwards so that your face hits the ground or another surface

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the activity of exploring abandoned buildings and other manmade structures

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