From Longman Dictionary of Contemporary EnglishChristmas EveˌChristmas ˈEve noun [uncountable] TMCDecember 24th, the day before Christmas Day We spent Christmas Eve cooking and getting ready for Christmas Day. Unfortunately, I’ve got to work on Christmas Eve.
Examples from the Corpus
Christmas Eve• Although they set up housekeeping a couple of years ago, Dave officially proposed last Christmas Eve.• an 11 p.m. church service on Christmas Eve• Angel and Tess decided to spend a day together shopping on Christmas Eve.• It's Christmas Eve, remember?• And to think when Peggy was little Gran wouldn't let me switch on the tree lights until Christmas Eve.• The offer runs right up until Christmas Eve - perfect for last-minute Christmas shopping!• It was Christmas Eve, therefore Santa Claus and his helpers were all very busy.• His third day in jail was Christmas Eve. 