*lustration*

n. [ L. illustratio: cf. F. illustration. ] 1. The act of illustrating; the act of making clear and distinct; education; also, the state of being illustrated, or of being made clear and distinct. [ 1913 Webster ]

2. That which illustrates; a comparison or example intended to make clear or apprehensible, or to remove obscurity. [ 1913 Webster ]

3. A picture designed to decorate a volume or elucidate a literary work. [ 1913 Webster ]

n. [ L. lustratio: cf. F. lustration. ] 1. The act of lustrating or purifying. [ 1913 Webster ]

And holy water for lustration bring. Dryden. [ 1913 Webster ]

2. (Antiq.) A sacrifice, or ceremony, by which cities, fields, armies, or people, defiled by crimes, pestilence, or other cause of uncleanness, were purified. [ 1913 Webster ]