Definition of "durbar"

A month after his retirement he was summoned to a durbar in Rangoon, to receive the decoration that had been awarded to him by the Indian Government.

1934, George Orwell, chapter 25, in Burmese Days‎

He decided to stage a durbar on the plains outside the city, at which the Afghans would be able to express their loyalty to their new ruler.

1990, Peter Hopkirk, The Great Game, Folio Society, published 2010, page 175

Father had refused to see my brother privately and had chosen to speak to him at the durbar held to honour the victors of the Malwa campaign […]

1997, Kiran Nagarkar, Cuckold, HarperCollins, published 2013, page 456

“If you cannot gueſs, perhaps the bird himſelf may inform you, Madam,” ſaid the ſultan, who was withdrawing to the grand durbar.

1769, Firishta, translated by Alexander Dow, Tales translated from the Persian of Inatulla of Delhi, volume I, Dublin: P. and W. Wilson et al., page 12