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English definition of “Christmas”

Christmas

noun [C or U] uk   /ˈkrɪs.məs/ us  
(the period just before and after) 25 December, a Christian holy day that celebrates the birth of Jesus Christ: We're going to my mother's for Christmas. Happy Christmas! We had a fantastic Christmas. the Christmas holidays
(Definition of Christmas from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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