D defs.my
Entry 2 senses Webster, 1913

Lustration

· Lus·tra·tion · IPA /lʌsˈtɹeɪʃən/
01 n. The act of lustrating or purifying.
  1. 1.
    The act of lustrating or purifying.
    “And holy water for lustration bring.” Dryden.
  2. 2.
    A sacrifice, or ceremony, by which cities, fields, armies, or people, defiled by crimes, pestilence, or other cause of uncleanness, were purified.(Antiq.)