Illustrated Companion to the Latin Dictionary/Lustrum

This article incorporates text from a publication now in the public domain: Rich, Anthony (1849). The illustrated companion to the Latin dictionary, and Greek lexicon. p. vi. OCLC 894670115. https://archive.org/details/illustratedcompa00rich. 

LUSTRUM. A solemn purification or expiatory offering, made by the censors every five years, upon their retirement from office, on behalf of the whole people; at which a sow, a sheep, and an ox, were conducted three times round the assembled multitude in the Campus Martiius, and afterwards sacrificed. Liv. i. 44. xxxv. 9. xlii. 10.