Throw away catapult (5)
I believe the answer is:
sling
This might be a double definition.
'throw away' is the first definition.
'sling' can be an answer for 'throw' (chuck means throw as does sling). I'm not sure about the 'away' bit.
'catapult' is the second definition.
(I know that catapult can be written as sling)
Can you help me to learn more?
(Other definitions for sling that I've seen before include "Chuck; support for damaged arm" , "Sweetened drink with spirit base" , "Primitive weapon" , "Catapult or support as for injured arm" , "throwing implement like catapult" .)