Peacock Throne

. A famous throne formerly of the kings of Delhi, India, but since 1739, when it was carried off by Nadir Shah, held by the shahs of Persia (now Iran); -- so called from its bearing a fully expanded peacock's tail done in gems. [ Webster 1913 Suppl. ]

2. [ metonymically named after the throne on which he sat. ] The office or position of the Shah of Iran; as, to ascend the Peacock Throne. [ PJC ]