The guard with the money got shot (6)
I believe the answer is:
sentry
'the guard' is the definition.
(sentry is a kind of guard)
'with the money got shot' is the wordplay.
'with' is a charade indicator (letters next to each other).
'the money' becomes 'sen' (I've seen this before).
'got shot' becomes 'try' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'sen' next to 'try' is 'SENTRY'.
Can you help me to learn more?
(Other definitions for sentry that I've seen before include "Mil. guard" , "Soldier on guard" , "Look-out, guard" , "One who stands guard" , "Picket" .)