noun, plural Tajiks (especially collectively) Tajik for 1.
1.
a member of a people living mainly in Tadzhikistan, as well as parts of Afghanistan and China.
2.
Also, Tajiki
[tah-ji-kee, tah-jee-] /ˈtɑ dʒɪ ki, tɑˈdʒi-/ (Show IPA). the Iranian language spoken by the Tajiks, closely related to Persian but in Tadzhikistan written in the Cyrillic alphabet.