Pub diet for slimmers? (5)

I believe the answer is:

local

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'pub' is the definition.
(one's local pub)

I don't understand the rest of the clue.

(Other definitions for local that I've seen before include "Stopping regularly" , "Parish pump" , "Convenient pub" , "Of the particular neighbourhood" , "Nieghbourhood pub or its customer" .)

I've seen this clue in The Guardian.

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