Sole protector (4)
'sole protector' 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 "Card dispenser" , "Sandal, for instance" , "One of the things racehorse needs" , "trainer, for example" , "What's worn" .)
(Other definitions for galosh that I've seen before include "singular footwear" , "Wellington" , "Waterproof overshoe" , "Rubber overshoe" , "Waterproof shoe" .)