Bible Dictionaries
Lustration

Webster's Dictionary

(1):

(n.) A sacrifice, or ceremony, by which cities, fields, armies, or people, defiled by crimes, pestilence, or other cause of uncleanness, were purified.

(2):

(n.) The act of lustrating or purifying.

Bibliography Information
Webster, Noah. Entry for 'Lustration'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​l/lustration.html. 1828.