1) Great hall 2) Great hall of Persian palace 
An Apadana ( The Apadāna is a collection of biographical stories found in the Khuddaka Nikaya of the Pāli Canon, the scriptures of Theravada Buddhism. It is thought by most scholars to be a late addition to the canon, composed during the 1st and 2nd century BCE. The title Apadāna perhaps means `life history` or `legend` in Pāli; it has the additional, ...
(from the article `art and architecture, Iranian`) ...provides the earliest example of a formula in design that was to become a criterion of Achaemenian architecture: a columned hall with corner ...
[n] - the great hall in ancient Persian palaces
noun the great hall in ancient Persian palaces