The word Arash means: Derakhshandeh, Derakhshân. In english it means: Bright, Brilliant, Shining, Luminous.
"Ârash e Kamângîr" (Arash the Archer) was the name of an Iranian national hero who sacrificed his life to preserve the territorial integrity of Iran.
Ârash e Kamângîr (Arash the Archer) story:
At the end of war between Iran and Turan, Turan has advanced to near Damâvand mountain area. Turanian wanted to destroy the Iranians' spirit, so they ordered Iranian to shoot an arrow towards Turan. Wherever the arrow lands, that would be the new border between Iran and Turan. An Iranian super hero, Arash by name volunteered to shoot the arrow. The location: peak of the Damâvand (Iran's highest mountain, 30 kilometer northeast of Tehrân, the Irânian capital; height 5671 meter). On the bright morning of Tîrgân, Arash stripped naked, faced north, strained his bow as never before, let the arrow fly and exhausted, turned into energy and ride with the arrow. The arrow flew the entire morning and fell at noon -- 2250 kilometer on the bank of the Oxus River in what is now Central Asia. And the river remained the boundary between Iran and Turan for centuries until Mongoloid hordes poured in to push the Iranians southward in the 10th century A.D.
Arash body was never Found. There are still stories from travelers who were lost in the mountain, that how they heard Arash Kamangir voice. And the voice helped them find the road and saved their lives.
Arssh is the most beautiful name there is.