a. [ L. lustralis, fr. lustrum: cf. F. lustral. See Lustrum. ] 1. Of or pertaining to, or used for, purification; as, lustral days; lustral water. [ 1913 Webster ]

2. Of or pertaining to a lustrum. [ 1913 Webster ]

v. t. [ imp. & p. p. Lustrated p. pr. & vb. n. Lustrating ] [ L. lustratus, p. p. of lustrare to lustrate, fr. lustrum. See Lustrum. ] To make clear or pure by means of a propitiatory offering; to purify. [ 1913 Webster ]

We must purge, and cleanse, and lustrate the whole city. Hammond. [ 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 ]