From Longman Dictionary of Contemporary EnglishBoxing DayˈBoxing Day noun [countable, uncountable] British EnglishTMC a national holiday in England and Wales, on the day after Christmas Day
Examples from the Corpus
Boxing Day• The day following Boxing Day the new help arrived.• Brady collapsed on Boxing Day, three months into a hunger strike in protest at his transfer to a tougher ward.• It was already February, and Faye had had no problems since her return from hospital on Boxing Day.• Two fine actors vanished before my appalled eyes within a couple of hours on Boxing Day.• It will probably start on Boxing Day when we are right in the middle of winter.• It was Boxing Day afternoon, and the third psychiatric session that week which had been attended by Hargreave. 