Definition of peacock throne in English:

peacock throne

noun

  • The former throne of the Mughal emperors of Delhi, subsequently in the possession of the Shahs of Persia (later Iran), being adorned with precious stones forming an expanded peacock's tail; (hence by metonymy, in form Peacock Throne the rule or office of the former Shah of Iran (previously Persia); the Iranian monarchy.

Origin

Mid 18th century.