Hanukkah UK /ˈhæ.nə.kə/US /ˈhɑː.nə.kə/ noun1 •(Judaism) An eight-day Jewish festival, starting on the 25th day of Kislev, which commemorates the rededication of the temple in Jerusalem after the victory of the Maccabees over the Greek Syrians.Rebecca and Roni Kopelman have been celebrating Christmas and Hanukkah since they got together in 2006, building the foundations of an interfaith household. — 2012 formsHanukkahs