Duke
derived from the Latin dux, meaning "a leader;" Arabic, "a
sheik." This word is used to denote the phylarch or chief of a
tribe (Gen. 36:15-43; Ex. 15:15; 1 Chr. 1:51-54).
Bibliography Information Easton, Matthew George. M.A., D.D., "Biblical Meaning for 'Duke' Eastons Bible Dictionary". bible-history.com - Eastons; 1897.