Item of clothing or clobber (4)
I believe the answer is:
sock
This clue is a double definition.
'item of clothing' is the first definition.
(I've seen this before)
'clobber' is the second definition.
(thesaurus)
'or' acts as a link.
(Other definitions for sock that I've seen before include "Item of footwear" , "Very short stocking?" , "Strike, hose" , "This partly protects member" , "Hit; horse's leg marking" .)