Source : Webster's Revised Unabridged Dictionary (1913)

Calmucks \Cal"mucks\, n. pl.; sing. {Calmuck}.
   A branch of the Mongolian race inhabiting parts of the
   Russian and Chinese empires; also (sing.), the language of
   the Calmucks. [Written also {Kalmucks}.]

Source : WordNet®

kalmucks
     See {kalmuc}