1. Someone who shows or reveals sacred things.
2. The presiding priest who initiated candidates at the Eleusinian mysteries; hence, one who teaches the mysteries and duties of religion.
3. In ancient Greece, an official expounder of rites of worship and sacrifice.
4. Any interpreter of sacred mysteries or esoteric principles; a mystagogue.
5. Someone who interprets and explains obscure and mysterious matters; especially, sacred doctrines or mysteries.
6. An interpreter of events: someone who explains or comments about everyday matters.