Crossword Genius

Obscure stuff (6)

Ross

I believe the answer is:

arcana

'obscure stuff' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for arcana that I've seen before include "Secret things" , "Tarot cards" , "Secrets, mysteries" .)

I've seen this clue in the LA Times.
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