Crossword clue: to cleanse; to purge away, as foul or offending matter from the body, or from an ulcer.
1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).
Possible answers
wipe away; to wash off or out, cleanse; chiefly in medical use: to clear away foul matter from the body