a formal prayer, as at the beginning of a Mass, in which sins are confessed
Webster’s New World College Dictionary, Fourth Edition, compiled by the
editors of Webster’s New World Dictionaries. Copyright © 2010 by Houghton
Mifflin Harcourt. Published by Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'Confiteor'
ME < LL(Ec), I confess: see confess