Visitor knocked out before bar's closing time in Bengaluru (7)

I believe the answer is:

tourist

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

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

(Other definitions for tourist that I've seen before include "Cheap travel class" , "Someone who travels for pleasure" , "Person travelling for pleasure" , "Traveller for pleasure" , "Sightseeing traveller" .)

I've seen this clue in The Hindu.

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