Merchant's booth (5)
I believe the answer is:
kiosk
'merchant's booth' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for kiosk that I've seen before include "Small sales booth" , "Pavement shop" , "Roofed stall; telephone box" , "Small open shop or telephone booth" , "Small stall" .)