Meaning

noun a member of the Mongolian people of central Asia who invaded Russia in the 13th century

noun a member of the Turkic-speaking people living from the Volga to the Ural Mountains (the name has been attributed to many other groups)

noun the Turkic language spoken by the Tatar living from the Volga to the Ural Mountains

originBorrowed from Czech, Slovak, Polish Tatar and Hungarian Tatár, an ethnic surname for a Tatar person.

Etymology from Wiktionary, CC BY-SA 3.0