One guided around shop (4)
I believe the answer is:
deli
'shop' is the definition.
(deli is a kind of shop)
'one guided around' is the wordplay.
'one' becomes 'i' (Roman numeral).
'guided' becomes 'led' ('lead' can be a synonym of 'guide').
'around' shows that the letters should be reversed in order.
'i'+'led'='iled'
'iled' in reverse letter order is 'DELI'.
(Other definitions for deli that I've seen before include "Shop with unusual foods" , "Food store" , "Food shop (colloq.)" , "small food shop" , "Exotic food shop" .)