Groom guarding enclosure for money (8)
I believe the answer is:
currency
'money' is the definition.
(thesaurus)
'groom guarding enclosure' is the wordplay.
'groom' becomes 'curry' ('curry' can be a synonym of 'groom').
'guarding' is an insertion indicator.
'enclosure' becomes 'enc'.
'curry' going around 'enc' is 'CURRENCY'.
'for' acts as a link.
(Other definitions for currency that I've seen before include "Money in accepted use" , "Coinage - circulation" , "General acceptance" , "(A country's) money" , "Money in use in a country" .)