1. (n.) A Roman governor of the fourth part of a province; hence, any subordinate or dependent prince; also, a petty king or sovereign.

2. (a.) Four.

Dalai Lama Holy Roman Emperor Inca Kaiser ardri beg beglerbeg burgrave cacique caesar cham collector czar dey eparch exarch gauleiter governor governor-general kaid khan khedive lieutenant governor mikado nabob nawab negus padishah palatine pendragon pharaoh proconsul provincial rig sachem sagamore satrap shah sheikh shogun stadtholder subahdar tenno tetrarch tycoon vali vice-king viceroy wali