KolyadaRussian, Ukrainian From Коляда (Kolyada), a name for Slavic Christmas celebrations (or formerly, Slavic pagan traditional winter solstice celebrations).
KolykhayevmRussian From Russian колыхание (kolykhaniye), meaning "swaying, swinging, fluctuating".
KrupskayafRussian, Yiddish (Russified) Derived from Russian крупа (krupa), meaning "grains". This was the last name of Nadezhda Krupskaya, Lenin's wife.
KulakRussian, Ukrainian, Belarusian, Polish Means "fist". Was also used to describe Ukrainian farmers who went against the Soviet government in the early 30s.