Clog or sandal (4)
I believe the answer is:
shoe
'clog or sandal' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for shoe that I've seen before include "Case for cards in a casino" , "Plate nailed to underside of horse's hoof" , "Brogue or loafer, perhaps" , "What's worn" , "Clothing item" .)