Christmas       
noun [ C or U ] uk/ˈkrɪs.məs/ us/ˈkrɪs.məs/
 圣诞节;圣诞节期间
(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. 我们要去我母亲家过圣诞节。 
 Merry/Happy Christmas! 圣诞快乐! 
 We had a fantastic Christmas. 我们过了一个愉快的圣诞节。 
 the Christmas holidays 圣诞假期 
 Synonyms: NoelYule Yuletide 
Compare: Xmas
 - More examples
 - My daughter says she wants a mobile phone for Christmas.
 - It's nice to be with family and friends at Christmas.
 - There is so much to do in the weeks before Christmas.
 - Is there going to be a Christmas party at work this year?
 - There are several extra services and events at church during Christmas week.