Chai

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a term in various Indian languages.

wiktionary

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(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)

From Hindi-Urdu चाय(cāy) / چائے‎ (cāy), from Persian چای‎ (and Turkish çay, and cognates) [1] from Sinitic 茶(chá). [2] Doublet of tea; see that page for extended history.

etymonline

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chai (n.)

"tea," 1908, from the Russian or Arabic word for "tea" (see tea, and compare cha). The 1908 citation is in an Arabic context. Now used especially of spiced teas.