oligarchy
noun /ˈɒlɪɡɑːki/
  /ˈɑːləɡɑːrki/,  /ˈəʊləɡɑːrki/
 (plural oligarchies)
- [uncountable] a form of government in which only a small group of people hold all the power寡头政治 
- [countable + singular or plural verb] the people who hold power in an oligarchy寡头统治集团 
- [countable] a country governed by an oligarchy寡头统治的国家 
词源late 15th cent.: from Greek oligarkhia, from oligoi ‘few’ and arkhein ‘to rule’.