Discuss what society girl consumed (6)
I believe the answer is:
debate
'discuss' is the definition.
(I know that debate is a more specific form of discuss)
'society girl consumed' is the wordplay.
'society girl' becomes 'deb' (I've seen this in another clue).
'consumed' becomes 'ate' (to eat is to consume food).
'deb'+'ate'='DEBATE'
'what' is the link.
(Other definitions for debate that I've seen before include "Contend" , "Discuss with opposing arguments" , "Discussion with arguments for and against" , "Discuss formally" , "Hold public discussion about" .)