Meaning

noun a bishop in one of several Eastern Orthodox Churches in North America

noun a bishop in eastern Christendom who holds a place below a patriarch but above a metropolitan

noun a viceroy who governed a large province in the Roman Empire

originEtymology tree Ecclesiastical Latin exarchusbor. English exarch Borrowed from Ecclesiastical Latin exarchus.

Etymology from Wiktionary, CC BY-SA 3.0