lustrate
Lustrate (verb) means to ritually cleanse or renew something, sometimes with an offering, or, historically, the Roman censor's ceremony held every five years to purify the city after a census.
Etymology
From Latin lustrātus (“lustrated”), perfect passive participle of lustrō (see -ate (verb-forming suffix)), from lustrum (“ritual purification”) + -ō (first conjugation verb-forming suffix), q.v. In reference to imparting luster, further via senses of Middle French lustre, from Old Italian lustro.