Overweight porter (5)

I believe the answer is:

stout

This clue is a double definition.

'overweight' is the first definition.
(thesaurus)

'porter?' is the second definition.
('stout' can be a synonym of 'porter')

(Other definitions for stout that I've seen before include "Dark ale" , "of above-average weight" , "Portly or stalwart" , "Corpulent" , "Portly - porter" .)

I've seen this clue in The Guardian and the Evening Standard.

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