Sandal or loafer (4)
I believe the answer is:
shoe
'sandal or loafer' is the definition.
(I know that sandal is a type of shoe)
This is all the clue.
(Other definitions for shoe that I've seen before include "Rim of metal nailed to a horse's hoof" , "pump, say" , "One of the things racehorse needs" , "Perhaps casual" , "mule, perhaps?" .)