Source : Webster's Revised Unabridged Dictionary (1913)

Orphic \Or"phic\, a. [L. Orphicus, Gr. ?.]
   Pertaining to Orpheus; Orphean; as, Orphic hymns.

Source : WordNet®

Orphic
     adj 1: ascribed to Orpheus or characteristic of ideas in works
            ascribed to Orpheus
     2: having an import not apparent to the senses nor obvious to
        the intelligence; beyond ordinary understanding;
        "mysterious symbols"; "the mystical style of Blake";
        "occult lore"; "the secret learning of the ancients" [syn:
         {mysterious}, {mystic}, {mystical}, {occult}, {secret}]