Expurgate
Expurgate (eks"pur*gāt or eks*pûr"gāt; 277) , transitive verb
[Latin expurgatus, past participle of expurgare to purge, purify; ex out, from + purgare to cleanse, purify, purge. See Purge, and compare Spurge.]
To purify; to clear from anything noxious, offensive, or erroneous; to cleanse; to purge; as, to expurgate a book.