emir

noun

1. a chieftain, prince, commander, or head of state in some Islamic countries.
2. a title of honor of the descendants of Muhammad.
3. (initial capital letter) the former title of the ruler of Afghanistan.
4. a title of certain Turkish officials.

noun (in the Islamic world)

1. an independent ruler or chieftain
2. a military commander or governor
3. a descendant of Mohammed