Shopper's mecca (4)
I believe the answer is:
mall
'shopper's mecca' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for mall that I've seen before include "Shopping facility" , "Shopping area closed to vehicles" , "Covered complex of shops or path by a canal" , "Large enclosed shopping area" , "Traffic-free street" .)