\Ex"arch\, n. [L. exarchus, Gr. ? ? commander; ?,?, out +
? to lead, rule: cf. F. exarque.]
A viceroy; in Ravenna, the title of the viceroys of the
Byzantine emperors; in the Eastern Church, the superior over
several monasteries; in the modern Greek Church, a deputy of
the patriarch, who visits the clergy, investigates
ecclesiastical cases, etc.