From Longman Dictionary of Contemporary Englishtroikatroi‧ka /ˈtrɔɪkə/ noun [countable] formal PGOa group of three people, countries etc the ruling troika
Examples from the Corpus
troika• Another of that 1975 troika, Vladimir Skorodenko, is now Genieva's senior colleague.• He grips a marble tablet listing the troika Marx, Engels, Lenin, and a fourth, struck out.• Skinner was also given responsibility for liaising closely with the troika at the apex of Bush's re-election campaign.• The Clippers like to boast that their troika is thriving while McDyess is stumbling.Origin troika (1800-1900) Russian troe “three” 