In discussion, brought up money (5)
I believe the answer is:
bread
'money' is the definition.
(bread is a kind of money)
'in discussion brought up' is the wordplay.
'in discussion' indicates a 'sounds like' (homophone) clue.
'brought up' becomes 'bred' (I've seen this before).
'bred' sounds like 'BREAD'.
(Other definitions for bread that I've seen before include "Dosh - a bloomer, perhaps?" , "Foodstuff; money" , "Staple food" , "brass" , "Staff of life" .)