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Meaning of SLEEP

Pronunciation:  sleep

WordNet Dictionary
  1. [n]  euphemisms for death (based on an analogy between lying in a bed and in a tomb); "she was laid to rest beside her husband"; "they had to put their family pet to sleep"
  2. [n]  a natural and periodic state of rest during which consciousness of the world is suspended; "he didn't get enough sleep last night"; "calm as a child in dreamless slumber"
  3. [n]  a torpid state resembling sleep
  4. [n]  a period of time spent sleeping; "he felt better after a little sleep"; "a brief nap"
  5. [v]  be asleep
  6. [v]  be able to accommodate for sleeping; "This tent sleeps six people"

SLEEP is a 5 letter word that starts with S.


 Synonyms: catch some Z's, eternal rest, eternal sleep, kip, log Z's, nap, quietus, rest, slumber, slumber
 Antonyms: wake
 See Also: aestivate, beauty sleep, bundle, catch a wink, catnap, contain, death, estivate, hibernate, hold, hole up, kip, live in, live out, nap, nonrapid eye movement, nonrapid eye movement sleep, NREM, NREM sleep, orthodox sleep, paradoxical sleep, period, period of time, physiological condition, physiological state, practice bundling, rapid eye movement, rapid eye movement sleep, REM, REM sleep, repose, rest, shuteye, sleep in, sleep late, sleep out, sleeping, take, time period



Webster's 1913 Dictionary
  1. \Sleep\, obs.
    imp. of Sleep. Slept. --Chaucer.
  2. \Sleep\, v. i. [imp. & p. p. {Slept}; p. pr. & vb. n.
    {Sleeping}.] [OE. slepen, AS. sl?pan; akin to OFries. sl?pa,
    OS. sl[=a]pan, D. slapen, OHG. sl[=a]fan, G. schlafen, Goth.
    sl?pan, and G. schlaff slack, loose, and L. labi to glide,
    slide, labare to totter. Cf. {Lapse}.]
    1. To take rest by a suspension of the voluntary exercise of
       the powers of the body and mind, and an apathy of the
       organs of sense; to slumber. --Chaucer.
             Watching at the head of these that sleep. --Milton.
    2. Figuratively:
       (a) To be careless, inattentive, or uncouncerned; not to
           be vigilant; to live thoughtlessly.
                 We sleep over our happiness.      --Atterbury.
       (b) To be dead; to lie in the grave.
                 Them also which sleep in Jesus will God bring
                 with him.                         --1 Thess. iv.
       (c) To be, or appear to be, in repose; to be quiet; to be
           unemployed, unused, or unagitated; to rest; to lie
           dormant; as, a question sleeps for the present; the
           law sleeps.
                 How sweet the moonlight sleep upon this bank!
  3. \Sleep\, v. t.
    1. To be slumbering in; -- followed by a cognate object; as,
       to sleep a dreamless sleep. --Tennyson.
    2. To give sleep to; to furnish with accomodations for
       sleeping; to lodge. [R.] --Blackw. Mag.
    {To sleep away}, to spend in sleep; as, to sleep away
       precious time.
    {To sleep off}, to become free from by sleep; as, to sleep
       off drunkeness or fatigue.
  4. \Sleep\, n. [AS. sl[=ae]p; akin to OFries. sl[=e]p, OS.
    sl[=a]p, D. slaap, OHG. sl[=a]f, G. schlaf, Goth. sl[=e]ps.
    See {Sleep}, v. i.]
    A natural and healthy, but temporary and periodical,
    suspension of the functions of the organs of sense, as well
    as of those of the voluntary and rational soul; that state of
    the animal in which there is a lessened acuteness of sensory
    perception, a confusion of ideas, and a loss of mental
    control, followed by a more or less unconscious state. ``A
    man that waketh of his sleep.'' --Chaucer.
          O sleep, thou ape of death.              --Shak.
    Note: Sleep is attended by a relaxation of the muscles, and
          the absence of voluntary activity for any rational
          objects or purpose. The pulse is slower, the
          respiratory movements fewer in number but more
          profound, and there is less blood in the cerebral
          vessels. It is susceptible of greater or less intensity
          or completeness in its control of the powers.
    {Sleep of plants} (Bot.), a state of plants, usually at
       night, when their leaflets approach each other, and the
       flowers close and droop, or are covered by the folded
    Syn: Slumber; repose; rest; nap; doze; drowse.
Computing Dictionary

1. (Or "block") When a process on a multitasking system asks the scheduler to deactivate it until some given external event (e.g. an interrupt or a specified time delay) occurs.

The alternative is to poll or "busy wait" for the event but this uses processing power.

Also used in the phrase "sleep on" (or "block on") some external event, meaning to wait for it.

E.g. the unix command of the same name which pauses the current process for a given number of seconds.

2. To go into partial deactivation to save power.

[jargon file]