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Definition of “night” - English Dictionary

"night" in American English

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nightnoun [C/U]

 us   /nɑɪt/
the ​part of every 24-hour ​period when it is ​dark because there is no ​directlight from the ​sun: [C] I’ll be in Pittsburgh on ​Tuesday night. [C] There was a ​fire last night in the Tremont ​section of the Bronx. [U] It often gets ​cold here at night.
(Definition of night from the Cambridge Academic Content Dictionary © Cambridge University Press)







"night" in British English

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nightnoun

uk   /naɪt/  us   /naɪt/
  • night noun (DARK PERIOD)

A1 [C or U] the ​part of every 24-hour ​period when it is ​dark because there is very little ​light from the ​sun: It gets ​cold at night. I ​slept really ​badly last night. I spent the night at Ted's. He took the night ​ferry/​train.

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  • night noun (EVENING)

A1 [C or U] the ​period of ​time between the late ​afternoon and going to ​bed; the ​evening: Let's go out on ​Saturday night. We've ​eaten out every night this ​week. She's a ​singer in a ​bar by night and a ​secretary by ​day.
[S] the ​evening on which a ​specialeventhappens: When's the last night of ​your show? The first/​opening night of her new ​movie was a ​greatsuccess.
night-night child's expression
used as another way of saying good night, usually by or to ​children
the other night
on one ​eveningrecently: I ​saw Naomi at the ​gym the other night.
a night out
an ​eveningspent at a ​restaurant, ​theatre, etc. ​rather than ​staying at ​home: I need a night out with the ​girls this ​weekend.UK Let's have a night out on ​Saturday.

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nightexclamation

uk   /naɪt/  us   /naɪt/ informal
a ​friendly way of saying ​goodbye when you ​leave someone in the ​evening or before going to ​bed or to ​sleep: Night, ​sweetheart! Sleep well!
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(Definition of night from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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