Warehouse platform (6)
I believe the answer is:
pallet
'warehouse platform' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for pallet that I've seen before include "Forklift truck's tray" , "Small platform for stacking goods" , "Mattress stuffed with straw" , "Makeshift bed" , "Base used with fork-lift" .)