شيخ

Etymology
From the root, related to the verb.

Noun

 * 1) old man
 * 2) elderly gentleman, elder
 * 3) sheik, chief, chieftain, patriarch
 * 4) senator
 * 5) sheik; Dr.; professor title of professors and spiritual leaders
 * 6) sir respectful title of address
 * 7) master someone outstanding or excellent