Hit with undergarment (4)
I believe the answer is:
sock
This could be a double definition.
'hit' is the first definition.
(I know that sock is a more specific form of hit)
'undergarment' is the second definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps you can see a link between them that I can't see?
'with' acts as a link.
Can you help me to learn more?
(Other definitions for sock that I've seen before include "Hit hard; woollen item" , "Thump" , "Hit with a powerful blow" , "one with wind" , "One worn" .)