Emir (noun)

1. A prince or commander in some Islamic countries.
2. A sovereign ruler of an Arab state.

Origin:

From arabic 'amīr, meaning 'commander' or 'prince'.

Examples:

1. The emir of Qatar is known for his lavish lifestyle.
2. The emirs of the Arab Emirates are among the wealthiest rulers in the world.
3. The emir was an important political figure in the Islamic world.
4. The emir's palace was a magnificent display of wealth and power.
5. The emir's decision to extend the peace treaty was widely applauded.