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English definition of “Christmas”

Christmas

noun [C or U]     /ˈkrɪs.məs/
(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 lovely Christmas. the Christmas holidaysReligious festivalsCelebrations, parties and special occasions
(Definition of Christmas noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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