Crossword Genius

No inner sanctuary (7)

Ross

I believe the answer is:

hideout

I'm a little stuck... Click here to teach me more about this clue!

'sanctuary' is the definition.
(I've seen this before)

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for hideout that I've seen before include "Place to lie low" , "den" , "retreat" , "sanctuary" .)

I've seen this clue in The Irish News and The Globe and Mail.
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