a member of an oligarchy 寡头政治家；寡头统治集团成员 an extremely rich and powerful person, especially a Russian who became rich in business after the end of the former Soviet Union 大亨（尤指苏联解体后发迹的俄罗斯人） the power of the oligarchs to influence the government 寡头统治政府的权力
Word Originlate 19th cent.: from Greek oligarkhēs, from oligoi ‘few’ + arkhein ‘to rule’.