Arcanum

n.	1.	A secret; a mystery; - generally used in the plural. Inquiries into the arcana of the Godhead. - Warburton.
	2.	(Med.) A secret remedy; an elixir.

Noun

1.

arcanum - information known only to a special group; "the secret of Cajun cooking" Synonyms: secret

cabala, cabbala, cabbalah, countersign, esoterica, info, information, kabala, kabbala, kabbalah, parole, password, qabala, qabalah, secret, watchword, word