Entry 1 sense Webster, 1913 Expurgatory · Ex·pur·ga·to·ry · IPA 01 a. Serving to purify from anything noxious or erroneous; cleansing; purifying. 1. Serving to purify from anything noxious or erroneous; cleansing; purifying. Phrases & compounds Expurgatory Index — See Index Expurgatorius, under Index.