Meaning of Eleusinian mysteries

Eleusin'ian mys'teries

Pronunciation: [key]
  1. 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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.