The term 'Ottoman Nabob' refers to a powerful and wealthy ruler of the Ottoman Empire. The word 'Bey' is a title given to such rulers, which is derived from the Arabic word for 'CHIEFTAIN'. The title was used in the Ottoman Empire to denote a governor or military commander. The title was also used in other parts of the Middle East, including Egypt and North Africa. In modern times, the title is still used in some parts of the Middle East, particularly in Turkey.