Arbayistan

Alternative forms

 * Arbayestan

Etymology
, from the variant of the name of the Arabs, which, along with various other ethnic groups, constituted the population of the province. Compare 🇨🇬 and 🇨🇬.

Proper noun

 * 1)  an eastern Sassanian border province in Late Antiquity, corresponding to the Upper Mesopotamia excluding Osrhoene, bordering Adiabene in the east, Armenia in the north and Asuristan in the south