Definition of all-night adjective from the Oxford Advanced Learner's Dictionary

     

    all-night

     adjective
    adjective
    BrE
     
    ; NAmE
     
    [only before noun]
     
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  1. 1(of a place) open through the night an all-night cafe
  2. 2(of an activity) continuing through the night an all-night party
See the Oxford Advanced American Dictionary entry: all-night