We don't have synonyms for chanuka yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are hanuka and chaluka.
(n) :
Alternative spelling of Hanukkah. [(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.]
(n) :
Alternative spelling of Hanukkah. [(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.]