Before revision: More generally, an oligarch ( from ancient Greek: ὀλίγος (oligos) = 'few' and ἄρχειν (archein) = 'rule') is a "member of an oligarchy; a person who is part of a small group holding power in a state" .
After revision: More generally, an oligarch ( ) is a "member of an oligarchy; a person who is part of a small group holding power in a state"