An exclusive type of shop? (6)

I believe the answer is:

closed

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

I can't explain the rest of the clue.

(Other definitions for closed that I've seen before include "Held in private" , "See 1" , "Not open or available to all" , "Shut" , "restricted" .)

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

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