challah

noun3

1. •
   A traditional bread eaten by Ashkenazi Jews, usually braided for the Sabbath and round for a yom tov.

   • Posting photos of his Shabbat candles and challah on Friday night, [Mark] Zuckerberg said that he would be giving the ceremonial cup to his eldest daughter, Maxima. — 2017
2. •
   The portion separated in fulfillment of the above.
3. •
   The commandment to separate a portion of bread or bread dough for the cohanim (Numbers 15:17–21); in contemporary practice, the portion is burned until inedible.