Grocery-store vehicle (4)
I believe the answer is:
cart
'grocery-store vehicle' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for cart that I've seen before include "Old two-wheeled goods vehicle" , "Wheelbarrow" , "Light vehicle" , "Something not to be put in front of the horse" , "Two-wheeled, drawn vehicle" .)