Noun
a Russian member of the liberal minority group that advocated gradual reform and opposed the Bolsheviks before and during the Russian Revolution
Source: WordNetThe Provisional Government, with the support of Socialist-Revolutionary Party Menshevik leaders of the All-Russian Executive Committee of the Soviets, ordered an armed attack against the peaceful demonstrators, murdering hundreds. Source: Internet
These were to be followed by the arrests of Socialist Revolutionary Party and Menshevik leaders. Source: Internet