Dispute what young lady consumed (6)
I believe the answer is:
debate
'dispute' is the definition.
(thesaurus)
'young lady consumed' is the wordplay.
'young lady' becomes 'deb' ().
'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 "Ponder" , "Discuss with opposing arguments" , "Discuss (in parliament)" , "A public discussion about a topic" , "consideration" .)