Yakut

from WordNet (r) 3.0 (2006)

Yakut
    n 1: a member of a Turkic people of northeastern Siberia (mainly
         in the Lena river basin)
    2: the Turkic language spoken by the Yakut

from The Collaborative International Dictionary of English v.0.48

Yakut \Ya*kut"\, n.
   The Turkish language of the Yakuts, a Mongolian people of
   northeastern Siberia, which is lingua franca over much of
   eastern Siberia.
   [Webster 1913 Suppl.]