|(R. C. Ch.)||a catalogue of books which are forbidden by the church to be read; the index expurgatorius [L.], or expurgatory index, is a catalogue of books from which passages marked as against faith or morals must be removed before Catholics can read them. These catalogues are published with additions, from time to time, by the Congregation of the Index, composed of cardinals, theologians, etc., under the sanction of the pope.|
See also: Index
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.