Large in stomach from excess (4)
I believe the answer is:
glut
'excess' is the definition.
(thesaurus)
'large in stomach' is the wordplay.
'large' becomes 'l'.
'in' is an insertion indicator.
'stomach' becomes 'gut' (I've seen this before).
'l' placed into 'gut' is 'GLUT'.
'from' is the link.
(Other definitions for glut that I've seen before include "An excess of something so that prices fall" , "Overabundance" , "Flood" , "An excessive supply or surfeit" , "Fill to excess" .)