troika[noun]Synonyms: triumvirate, triad, threesome, trine, trinity, trio, triple, triune
 [TahlilGaran] English Synonym Dictionary ▲
 troi‧ka /ˈtrɔɪkə/ 
 noun [countable] formal[
Date: 1800-1900; 
Language: Russian; 
Origin: troe 'three']
 a group of three people, countries etc: 
 the ruling troika  [TahlilGaran] Dictionary of Contemporary English ▲