arcanum

n. secret or hidden information

Arcanum may refer to:Arcanum (book), a novel by Thomas WheelerArcanum (album), a 1996 album by Acoustic AlchemyArcanum (role-playing game)Arcanum (comic book series), a 2001 video gameArcanum, OhioThe Grand Arcanum, the secret of the philosopher's stone in alchemyArcanum, a piece of music by Ezequiel Viñao
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Noun
1. information known only to a special group; "the secret of Cajun cooking"
(synonym) secret
(hypernym) information, info
(hyponym) esoterica

(n.)
A secret; a mystery; -- generally used in the plural.
  

(n.)
A secret remedy; an elixir.
  

N
secret| mystery; secret/hidden place