Money supplied by baker (5)
I believe the answer is:
bread
'money' is the definition.
(bread is slang for money)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for bread that I've seen before include "It's made with 23" , "Dosh (slang)" , "Loaves" , "Baked food; money" , "Bloomers, say" .)