Noun
Karluk (plural Karluks or Karluk)
A member of a nomadic Turkic tribal confederacy residing in Kara-Irtysh and the Tarbagatai Mountains, closely related to the Uyghurs.
By the 10th century, the Oghuz had expanded west and north of the Aral Sea and into the steppe of present-day Kazakhstan, absorbing not only Iranians but also Turks from the Kipchak and Karluk ethnolinguistic groups. Source: Internet