How to use veto to get leader from jesting with this instrument? (5)
I believe the answer is:
banjo
'how to use veto to get leader from jesting with this instrument?' is the definition.
'banjo' can be an answer for 'instrument?' (banjo is a kind of instrument). I am not certain of the rest of the definition.
'jesting with this instrument?' is the wordplay.
'jesting' becomes 'jo' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'with' says to put letters next to each other.
'this instrument?' becomes 'ban' (ban is a kind of instrument).
'jo' put after 'ban' is 'BANJO'.
(Other definitions for banjo that I've seen before include "Stringed instrument with long neck" , "Relative of the guitar" , "String instrument" , "Stringed instrument like guitar with round body" , "Instrument with long neck and round body" .)