1A ruler in an oligarchy.
- The sense of individual identity of the oligarch is entirely located in the social structure of the oligarchy itself.
- These cities were ruled by oligarchs who enjoyed the backing of the Roman authorities.
- Kings and oligarchs are playing their last card: we can prevent their game.
2(Especially in Russia) a very rich business leader with a great deal of political influence.
- We are starting to win back our country from the media, the oligarchs, the corrupt politicians.
- The dictatorship of transnational corporations, ruled by financial oligarchs, must be ended.
- By making their fortunes on the backs of common Russians, the oligarchs themselves are a pretty unsympathetic lot.
Late 19th century: from Greek oligarkhēs, from oligoi 'few' + arkhein 'to rule'.
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