Stuff son consumed (4)
I believe the answer is:
sate
'stuff' is the definition.
(thesaurus)
'son consumed' is the wordplay.
'son' becomes 's'.
'consumed' becomes 'ate' (eating is a kind of consuming**).
's'+'ate'='SATE'
(Other definitions for sate that I've seen before include "Supply to excess" , "Satisfy - surfeit" , "Satisfy more than fully" , "Quench" , "Make content" .)