Delay; heist (4-2)
I believe the answer is:
hold-up
This clue is a double definition.
'delay' is the first definition.
(I know that delay can be written as hold up)
'heist' is the second definition.
(I know that hold-up is a type of heist)
(Other definitions for hold-up that I've seen before include "Commit armed robbery or keep aloft" , "Delay or show aloft" , "Robbery; cause of delay" , "Support by arms - threaten by arms" , "Stop and rob" .)