|1.||a. the annual commemoration by Christians of the birth of Jesus Christ on Dec 25|
|b. Also called: Christmas Day Dec 25, observed as a day of secular celebrations when gifts and greetings are exchanged|
|c. (as modifier): Christmas celebrations|
|2.||Lady Day Midsummer's Day Compare Michaelmas Also called: Christmas Day (in England, Wales and Ireland) Dec 25, one of the four quarter days|
|3.||Also called: Christmastide the season of Christmas extending from Dec 24 (Christmas Eve) to Jan 6 (the festival of the Epiphany or Twelfth Night)|
|[Old English Crīstes mæsse|
A festival commemorating the birth of Jesus, traditionally celebrated on December 25 by most Western Christian churches. Although dating to probably as early as a.d. 200, the feast of Christmas did not become widespread until the Middle Ages. Today, Christmas is largely secularized and dominated by gifts, decorated trees, and a jolly Santa Claus.