a historical region (with indefinite boundaries) in E Europe and Asia, inhabited by Bulgars until overrun by the Tatars in the mid-13th century: extended as far east as the Pacific under Genghis Khan
2. Gulf of Tatary
Tatary in American English
(ˈtɑtəri)
vast region in Europe & Asia under the control of Tatar tribes in the late Middle Ages: its greatest extent was from SW Russia to the Pacific