Twelfth day twelfth·day uncommon noun 1. twelve days after Christmas; celebrates the visit of the three wise men to the infant Jesus SynonymsEpiphanyEpiphany of Our LordTwelfth dayThree Kings' DayJanuary 6 Related words Broader terms Christian holy day Parts January WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
