the GNU version of the Collaborative International Dictionary of English
v. To deprive or divest or a frock; specifically, to deprive of priestly character or privilege.
The Century Dictionary and Cyclopedia
To deprive of a frock; divest of a frock; hence, referring to a monk's frock, to deprive of ecclesiastical rank or authority.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
v. divest of the frock; of church officials
Word Usage
"Former Oakland Bishop John Cummings has told The New York Times that in the 80s, the Holy See was reluctant to 'unfrock' pedophile priests, including Stephen Kiesle, found guilty of lewd conduct with two young boys in San Francisco in 1978."