A beverage made from spiced black tea, honey, and milk.
[Ultimately from Chinese (Mandarin) chá, tea.]
Chai (Arabic: شَاي, Hindi: चाय, Urdu/Persian: چاى, Russian: чай, Turkish: çay , ultimately from the Chinese word chá (茶) ) is the word for tea generally in Asia, North and East Africa and Eastern Europe. Cognates in other languages include the Bengali chā, the Marathi chahā and the Tamil thaeneer.
Wikipedia article "Chai".