Chanukah is the Jewish eight-day, wintertime “festival of lights,” celebrated with a nightly menorah lighting, special prayers and fried foods.
The Hebrew word Chanukah means “dedication,” and is thus named because it celebrates the rededication of the Holy Temple (as you’ll read below). Also spelled Hanukkah (or variations of that spelling), the Hebrew word is actually pronounced with a guttural, “kh” sound, kha-nu-kah, not tcha-new-kah.
https://www.chabad.org/.../jewish/What-Is-Hanukkah.htm
Original source can be found here.