Emir

Emir (also written Ameer), an Eastern word denoting "noble" or "princely," and originally employed to denote those who could claim descent from Mahomet or his daughter Fatima. Such emirs eire to be found in Arabia, and in Turkey. They are entitled to wear a green turban, and form a kind of privileged nobility. Another use of the word is to denote the holders of certain high offices, and the Caliph himself is the Emir or Commander of the Faithful.