Supporter starts to send some money (5)
I believe the answer is:
brass
'money' is the definition.
(I've seen this before)
'supporter starts to send some' is the wordplay.
'supporter' becomes 'bra' (I've seen this before).
'starts to' says to take the initial letters.
The initial letters of 'send some' is 'ss'.
'bra'+'ss'='BRASS'
(Other definitions for brass that I've seen before include "Alloy of Cu and Zn" , "Common alloy" , "memorial in church" , "An alloy; part of orchestra" , "Boldness" .)