Such a porter may be stout (6)

I believe the answer is:

strong

I'm a little stuck... Click here to teach me more about this clue!

'be stout' is the definition.
(thesaurus)

I don't understand the rest of the clue.

(Other definitions for strong that I've seen before include "is excelling" , "Physically powerful - feel 1 Across" , "strong" , "firm" , "Mighty, powerful" .)

I've seen this clue in the Evening Standard.

Want a hint initially instead of a full solution? Install my app