Hit something inside your shoe? (4)
I believe the answer is:
sock
I believe this clue is a double definition.
'hit' is the first definition.
(socking is a kind of hitting)
'something inside your shoe?' is the second definition.
(shoes are worn over socks)
(Other definitions for sock that I've seen before include "Foot covering" , "Very short stocking?" , "Item of clothing" , "Garment; hard blow" , "One going into Oxford maybe" .)