Stick up and rob (3)
I believe the answer is:
mug
I believe this clue is a double definition.
'stick up' is the first definition.
(mugging is a kind of sticking up)
'rob' is the second definition.
(slang)
'and' is the link.
(Other definitions for mug that I've seen before include "Drinking vessel for one easily deceived" , "Vessel for a bit of a fool" , "Make a face" , "Large cup without a saucer" , "Face; cup; rob" .)