In Arabic and some other non-European countries: a ruler, military commander, or prince; = emir, n. 1. historical in later use.

With a and plural. A Muslim ruler; one having the rank of sultan.

(The title of) a ruler, governor, or military commander in any of various Islamic countries.

The sovereign or chief ruler of a Muslim country; spec. (Historical) the sovereign of Turkey. Also formerly, a prince or king's son, a high officer.

Hence used (often with capital initial) as the title of certain Arab princes. The ruler of various other places; esp. the chief magistrate, or…

= emir, n. 1 2.