Supreme Soviet

noun
1.
the legislature of the former Soviet Union and its successor states, consisting of an upper house (Soviet of the Union or Council of the Union) whose delegates are elected on the basis of population, and a lower house (Soviet of Nationalities or Council of Nationalities) whose delegates are elected to represent the various nationalities.
Also called Supreme Council.
Origin
translation of Russian Vérkhniĭ sovét
British Dictionary definitions for Supreme Soviet

Supreme Soviet

noun (in the former Soviet Union)
1.
the bicameral legislature, comprising the Soviet of the Union and the Soviet of the Nationalities; officially the highest organ of state power
2.
a similar legislature in each former Soviet republic