Portly porter (5)
I believe the answer is:
stout
I believe this clue is a double definition.
'portly' is the first definition.
(synonyms)
'porter' is the second definition.
(porter can mean stout)
(Other definitions for stout that I've seen before include "Inured to fatigue and hardship" , "Rather fat, stocky" , "Rather fat, drink" , "of above-average weight" , "Portly - porter" .)