Old Persian: beam, the beam end, name of a mythological archer who set the border between Iran and Turan shot with an arrow, the arrow was traveling three days and even then he was never seen again. After Ferdowssis King books (Shahname) are the parts from him. Potential as related to Atash (fire) and Azarakhsh (lightning). Even as Kiarash possible.
(Sent from: Arash Shobeiry)