Persia

Short definition from Wiktionary

Proper noun

1. 1
   The former term referring to Iran in the West.
2. 2
   Persia proper (Persis), the land of the ancient Persians, corresponding to modern-day Fars province in southwestern Iran.
3. 3
   Territories corresponding to either of the two Persian Empires ruled by dynasties from Persis, especially the first of the two.