[ˈɒlɪɡɑːk], (Noun)

Definitions:
- a ruler in an oligarchy

- a very rich business leader with a great deal of political influence (particularly with reference to individuals who benefited from the privatization of state-run industries after the collapse of the Soviet Union)
(e.g: it seems more than a coincidence that former employees, advisors, and allies of the billionaire oligarch have been parachuted into such positions)


Phrases:

Origin:
early 17th century: from Greek oligarkhēs, from oligoi ‘few’ + arkhein ‘to rule’. oligarch dates from the late 1990s and derives from Russian oligarx