Catch coming back from the bank (3)
I believe the answer is:
nab
'catch' is the definition.
(nab can mean to capture or arrest)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for nab that I've seen before include "nail" , "Pinch" , "Seize quickly" , "Collar (sl.)" , "Cop" .)