Webster's Revised Unabridged Dictionary · 1913

Cha

Cha (cha) , noun

[Chin. ch‘a.]

Tea; -- the Chinese (Mandarin) name, used generally in early works of travel, and now for a kind of rolled tea used in Central Asia.
A pot with hot water... made with the powder of a certain herb called chaa, which is much esteemed. — Tr. J. Van Linschoten's Voyages (1598)