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English definition of “Halloween”

Halloween

noun [C or U] (also Hallowe'en)     /ˌhæl.əʊˈiːn/ US  /-oʊ-/
the night of 31 October when children dress in special clothes and people try to frighten each otherCelebrations, parties and special occasionsSpecific holidays and festivals
(Definition of Halloween noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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