Hold up place where stuff is sold (5)
I believe the answer is:
stall
'hold up' is the definition.
(stall can mean to delay or hold up)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for stall that I've seen before include "Hedge" , "Hang back" , "digital protection" , "outlet at a fair" , "Box" .)