No clothes are worn in this city (4)

I believe the answer is:

bath

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

I cannot understand how the rest of the clue works.

(Other definitions for bath that I've seen before include "English spa founded by the Romans" , "Tub for washing" , "It may be run" , "Check of books" , "Georgian city" .)

I've seen this clue in The Telegraph.

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