n. 乳酒

Koumiss \Kou"miss\, n. [Russ. kumys; of Mongolian origin.]
An intoxicating fermented or distilled liquor originally made
by the Tartars of central Asia from mare's or camel's milk.
It can be obtained from any kind of milk, and is now largely
made in Europe. [Written also {koumyss}, {kumiss}, {kumis},
{kumish}, and {kumys}.]

Koumiss has from time immemorial served the Tartar
instead of wine or spirits. --J. H.
Newman.