Chap handin' out instrument (8)
I believe the answer is:
mandolin
'instrument' is the definition.
(I know that Mandolin is a instrument)
'chap handin'' is the wordplay.
'chap' becomes 'man' (chap can mean a man).
'handin'' becomes 'dolin' (I can't explain this - if you can you should believe this answer much more).
'man'+'dolin'='MANDOLIN'
'out' acts as a link.
Can you help me to learn more?
(Other definitions for mandolin that I've seen before include "Lute-like instrument" , "it has strings attached" , "Almond in the stringed instrument, oddly" , "one's deployed in the kitchen" , "Small guitar-like instrument" .)