n. In the Anglican and Eastern Orthodox systems, a senior administrative official in a diocese, just under the bishop, often in charge of an archdeaconry. As a title, it can be filled by either a deacon or priest.
the GNU version of the Collaborative International Dictionary of English
n. In England, an ecclesiastical dignitary, next in rank below a bishop, whom he assists, and by whom he is appointed, though with independent authority.
The Century Dictionary and Cyclopedia
n. A chief deacon; strictly, an ecclesiastic who has charge of the temporal and external administration of a diocese, with jurisdiction delegated from the bishop.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. (Anglican Church) an ecclesiastical dignitary usually ranking just below a bishop
Word Usage
"This remarkable transformation, no doubt in some degree inevitable, was actually brought about chiefly through the instrumentality of a single man, a certain English archdeacon of Welsh descent, Geoffrey of Monmouth."