Thrilled about ten-cent deposit (8)
I believe the answer is:
sediment
'deposit' is the definition.
(I know that deposit can be written as sediment)
'thrilled about ten-cent' is the wordplay.
'thrilled' becomes 'sent' (send can mean to thrill or excite).
'about' indicates putting letters inside.
'ten cent' becomes 'dime' (I can't justify this - if you can you should give a lot more credence to this answer).
'sent' placed around 'dime' is 'SEDIMENT'.
Can you help me to learn more?
(Other definitions for sediment that I've seen before include "Lees" , "Dregs; deposit" , "End times (anag)" , "I'm nested in mud" , "Grounds - debris" .)