the mysteries, celebrated annually at Eleusis and Athens in ancient times, in memory of the abduction and return of Persephone and in honor of Demeter and Bacchus.
The Mystery Behind April’s NameWhile the first day of the fourth month of the year is sure to bring plenty of shenanigans, what isn't so certain is where the month's name originated.
Origin of Eleusinian mysteries
First recorded in 1635–45
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for eleusinian mysteries
a mystical religious festival, held in September at Eleusis in classical times, in which initiates celebrated Persephone, Demeter, and Dionysus
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012