Definition of night noun from the Oxford Advanced American Dictionary

      

    night

     noun
    noun
    NAmE//naɪt//
     
    [uncountable, countable]
     
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  1. 1 the time between one day and the next when it is dark, when people usually sleep These animals only come out at night. They sleep by day and hunt by night. The accident happened on Friday night. on the night ofJanuary 10 Did you hear the storm last night? I lay awake all night. Where did you spend the night? You're welcome to stay the night here. What is he doing calling at this time of night? You'll feel better after you've had a good night's sleep. The trip was for ten nights. The hotel costs $65 per person per night. the night train/boat/flight Night fell (= it became dark).
  2. 2the evening until you go to bed Let's go out on Saturday night. Bill's parents came for dinner last night. She doesn't like to walk home late at night. I saw her in town the other night (= a few nights ago). I'm working late tomorrow night. see also good night
  3. 3 an evening when a special event happens the first/opening night (= of a play, movie, etc.) a karaoke night an Irish/a Scandinavian, etc. night (= with Irish/Scandinavian music, entertainment, etc.)
  4. Idioms
    dance the night away
     
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    to dance for the whole evening or night
    have an early/a late night
     
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    to go to bed earlier or later than usual I've had a lot of late nights recently.
    have a good/bad night
     
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    to sleep well/badly during the night
    in the dead of night
     
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    in the quietest part of the night I crept out of bed in the dead of night and sneaked downstairs.
    it'll be all right on the night(saying)
     
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    used to say that a performance, an event, etc. will be successful even if the preparations for it have not gone well
    like night and day
     
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    if two people or things are like night and day, they are completely different from each other
    morning, noon, and night
     
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    at all times of the day and night (used to emphasize that something happens very often or that it happens continuously) She talks about him morning, noon, and night. The work continues morning, noon, and night.
    night and day,day and night
     
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    all the time; continuously The machines are kept running night and day. The store is open day and night.
    a night out
     
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    an evening that you spend enjoying yourself away from home They enjoy a night out occasionally.
    nighty/night night
     
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    used by children or to children, to mean “Good night” “Nighty night, sleep tight!”
      spend the night with somebody
       
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    1. 1to stay with someone for a night My daughter's spending the night with a friend.
    2. 2(also spend the night together) to stay with someone for a night and have sex with them
    the still of the night(literary)
     
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    the time during the night when it is quiet and calm
    things that go bump in the night(informal)(humorous)
     
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    used to refer to ghosts and other supernatural things that cannot be explained There are mysterious lights in the sky and things that go bump in the night.
 
adverb He can't get used to working nights (= at night).
See the Oxford Advanced Learner's Dictionary entry: night