Title for an Arab leader Crossword Clue

 The title for an Arab leader in a crossword puzzle is Sheikh.

The word "sheik" can mean "a man who is much concerned with his dress and appearance" or "the leader of an Arab village or family". In the context of a crossword puzzle, the clue "title for an Arab leader" is likely referring to the latter meaning. So, the answer "sheikh" would be a good fit for the clue if the puzzle is about Arab countries or culture.

Here are some other words that could be used to describe an Arab leader:

Emir

Sultan

Caliph

Amir

Mufti

I hope this helps!