Deposit the money sent round (8)
I believe the answer is:
sediment
'deposit' is the definition.
(I know that deposit can be written as sediment)
'money sent round' is the wordplay.
'money' becomes 'dime'.
'round' is an insertion indicator.
'dime' put inside 'sent' is 'SEDIMENT'.
'the' acts as a link.
(Other definitions for sediment that I've seen before include "Material settling out in a liquid" , "Grounds - debris" , "Send item (anag)" , "Residue" , "Dregs; deposit" .)