Faravahar

Faravahar, a photo by mehr-zad on Flickr.

Faravahar (OP *fravarti > MP: prʾwhr is one of the best-known symbols of Zoroastrianism, the state religion of ancient Iran. This religious-cultural symbol was adapted by the Pahlavi dynasty to represent the Iranian nation.
The etymology of Faravahar is the Middle Persian root /frwr/ (the Pahlavi script of Middle Persian did not represent short vowels), and the word is thus variously pronounced/written farohar, frohar, frawahr, fravahr and so forth, as there is no agreed upon method of transliterating the Middle Persian word into English. In Dekhoda's dictionary and the 17th century Persian dictionary Burhan Qati', it appears as فروهر "furuhar". The Encyclopedia Iranica renders it as frawahr (this reflects the Pazend dibacheh form, corresponding to Book Pahlavi prʾwhr).