(1):

(n.) A rank or order of holy beings.

(2):

(n.) A body of officials disposed organically in ranks and orders each subordinate to the one above it; a body of ecclesiastical rulers.

(3):

(n.) Dominion or authority in sacred things.

(4):

(n.) A form of government administered in the church by patriarchs, metropolitans, archbishops, bishops, and, in an inferior degree, by priests.