Old carouser settled youngster’s case (5)
I believe the answer is:
satyr
'old carouser' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe you can see an association between them that I can't see?
'settled youngster's case' is the wordplay.
'settled' becomes 'sat' (sat down).
'case' suggests removing the centre.
'youngster' with its centre removed is 'yr'.
'sat'+'yr'='SATYR'
Can you help me to learn more?
(Other definitions for satyr that I've seen before include "Trays (anag.)" , "Mythical woodland god or grossly lustful man" , "oversexed fellow" , "Lustful woodland god -- stray (anag)" , "Goat-like woodland deity of Greek mythology" .)