Dress order (5)
I believe the answer is:
array
I believe this is a double definition.
'dress' is the first definition.
(I've seen this in another clue)
'order' is the second definition.
(I've seen this in another clue)
(Other definitions for array that I've seen before include "Rig up" , "Impressive display; matrix" , "Impressive arrangement" , "dress" , "Lay out, arrange" .)