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English definition of “all-nighter”

all-nighter

noun [C]     /ˌɔːlˈnaɪ.tər/ US  /ˌɑːlˈnaɪ.t̬ɚ/
informal an event that lasts all nightEvents and occurrencesAccidents and disasters US informal a time when you spend all night studying, especially for an exam: I pulled an all-nighter last night.Knowing and learning
(Definition of all-nighter noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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