Lemuralia

[lem-yuh-rey-lee-uh, -reyl-yuh]
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noun (sometimes used with a plural verb)

the annual festival in ancient Rome in which the lemures were exorcised from houses.

Also Le·mu·ri·a [le-myoo r-ee-uh] /lɛˈmyʊər i ə/.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for lemuralia

Historical Examples of lemuralia