Object breaks damaged threads (7)
I believe the answer is:
raiment
'threads' is the definition.
(thesaurus)
'object breaks damaged' is the wordplay.
'object' becomes 'aim' (synonyms).
'breaks' indicates putting letters inside (inserted letters break into the word).
'damaged' becomes 'rent' (similar in meaning).
'aim' inserted into 'rent' is 'RAIMENT'.
(Other definitions for raiment that I've seen before include "Am inert (anag) - clothing" , "Clothing (archaic)" , "dress?" , "Apparel" , "Wear" .)