ku·miss also kou·miss 
(k-mĭs, kmĭs)
(k-mĭs, kmĭs)n.
The fermented milk of a mare or camel, used as a beverage by certain peoples of western and central Asia.
[Russian kumys, from Old Russian komyzŭ, from Old Turkic qïmïz, from qammaq, to shake.]