Hanukkah

UK: /ˈhɑːnəkə/

US: /ˈhɑnəkə, ˈxɑ-/

US: (hä′nə kə; Ashk. Heb. кнä′nə kə; Seph. Heb. кнä no̅o̅ kä′)

WordReference Random House Learner's Dictionary of American English © 2025

Ha•nuk•kah or Cha•nu•kah /ˈhɑnəkə, ˈxɑ-/   n. [proper noun]

1. Judaism an eight-day Jewish festival celebrating the rededication of the Temple.

WordReference Random House Unabridged Dictionary of American English © 2025

Ha•nuk•kah  (hä′nə kə; Ashk. Heb. кнä′nə kə;
Seph. Heb. кнä no̅o̅ kä′), n. 

1. Judaism a Jewish festival lasting eight days, celebrated from the 25th day of the month of Kislev to the 2nd of Tevet in commemoration of the rededication of the Temple by the Maccabees following their victory over the Syrians under Antiochus IV, characterized chiefly by the lighting of the menorah on each night of the festival.

Also, Chanukah. Also called Feast of Dedication, Feast of Lights. 

• Hebrew ḥănukkāh literally, a dedicating
• 1890–95

Collins Concise English Dictionary © HarperCollins Publishers::

Hanukkah, Hanukah, Chanukah / ˈhɑːnəkə -nʊˌkɑː xanuˈka/ noun

1. the eight-day Jewish festival of lights beginning on the 25th of Kislev and commemorating the rededication of the temple by Judas Maccabaeus in 165 bc
   Also called: Feast of Dedication, Feast of Lights

Etymology: from Hebrew, literally: a dedication