sleep

If you're tired, you probably need to sleep so lie down and close your eyes. When you wake up, you'll feel much better.

Everyone needs sleep and most of us get some at least once a day. Maybe that's why sleep is used in so many expressions. If you “sleep on it” you'll wait to make a decision until tomorrow. If you “sleep over,” you stay at someone's place for the night. A person who “lets sleeping dogs lie” knows when not to stir up trouble. If you slip into eternal sleep, you won't be needing any more naps.

Definitions of sleep
  1. noun
    a natural and periodic state of rest during which consciousness of the world is suspended
    “he didn't get enough sleep last night”
    synonyms: slumber
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    types:
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    sleeping
    the state of being asleep
    NREM, NREM sleep, nonrapid eye movement, nonrapid eye movement sleep, orthodox sleep
    a recurring sleep state during which rapid eye movements do not occur and dreaming does not occur; accounts for about 75% of normal sleep time
    REM, REM sleep, paradoxical sleep, rapid eye movement, rapid eye movement sleep
    a recurring sleep state during which dreaming occurs; a state of rapidly shifting eye movements during sleep
    shuteye
    informal term for sleep
    type of:
    physical condition, physiological condition, physiological state
    the condition or state of the body or bodily functions
  2. noun
    a period of time spent sleeping
    “he felt better after a little sleep
    synonyms: nap
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    types:
    beauty sleep
    sleep before midnight
    kip
    sleep
    type of:
    period, period of time, time period
    an amount of time
  3. noun
    a torpid state resembling deep sleep
    synonyms: sopor
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    type of:
    physical condition, physiological condition, physiological state
    the condition or state of the body or bodily functions
  4. noun
    euphemisms for death (based on an analogy between lying in a bed and in a tomb)
    “they had to put their family pet to sleep
    synonyms: eternal rest, eternal sleep, quietus, rest
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    type of:
    death
    the absence of life or state of being dead
  5. verb
    be asleep
    synonyms: catch some Z's, kip, log Z's, slumber
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    Antonyms:
    wake
    be awake, be alert, be there
    types:
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    bundle, practice bundling
    sleep fully clothed in the same bed with one's betrothed
    catch a wink, catnap, nap
    take a siesta
    sleep in, sleep late
    sleep later than usual or customary
    hibernate, hole up
    sleep during winter
    aestivate, estivate
    sleep during summer
    doze, drowse, snooze
    sleep lightly or for a short period of time
    type of:
    rest
    be at rest
  6. verb
    be able to accommodate for sleeping
    “This tent sleeps six people”
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    type of:
    accommodate, admit, hold
    have room for; hold without crowding
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