Gets rid of stolen catapult (9)
I believe the answer is:
slingshot
'catapult' is the definition.
(I know that catapult can be written as slingshot)
'gets rid of stolen' is the wordplay.
'gets rid of' becomes 'slings' (I can't justify this - if you can you should believe this answer much more).
'stolen' becomes 'hot' (stolen goods are 'hot').
'slings'+'hot'='SLINGSHOT'
Can you help me to learn more?
(Other definitions for slingshot that I've seen before include "Catapult -- thin gloss (anag)" , "enough to knock you out" , "that can help you get a stone off" , "Sing Holst? (Anag)" , "No slights (anag) - catapult (US)" .)