say it: tah-TAHR
tatar is a noun meaning "a member of the Mongolian people of central Asia who invaded Russia in the 13th century". It carries 3 recorded senses.
a member of the Mongolian people of central Asia who invaded Russia in the 13th century
a member of the Turkic-speaking people living from the Volga to the Ural Mountains (the name has been attributed to many other groups)
the Turkic language spoken by the Tatar living from the Volga to the Ural Mountains
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for tatar come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.