Excessively fat or fleshy (5)
I believe the answer is:
obese
I believe this clue is a double definition.
'excessively fat' is the first definition.
(I've seen this before)
'fleshy' is the second definition.
(thesaurus)
(Other definitions for obese that I've seen before include "Too chubby" , "Pathologically fat" , "Needing to lose weight" , "Enormously portly" , "Stout" .)