russian revolution(n = noun.act) october revolution - the coup d'etat by the Bolsheviks under Lenin in November 1917 that led to a period of civil war which ended in victory for the Bolsheviks in 1922; Array
russian revolution(n = noun.act) february revolution - the revolution against the czarist government which led to the abdication of Nicholas II and the creation of a provisional government in March 1917; Array