British study making money (5)
I believe the answer is:
bread
'money' is the definition.
(bread is slang for money)
'british study' is the wordplay.
'british' becomes 'b' (abbreviation e.g. in 'BBC').
'study' becomes 'read' (synonyms).
'b'+'read'='BREAD'
'making' acts as a link.
(Other definitions for bread that I've seen before include "It's made with 23" , "Eg, loaf or rolls" , "Gracefully thin" , "Dosh - a bloomer, perhaps?" , "Food made from dough" .)