Something worn out angered us (9)
I believe the answer is:
dungarees
'something worn' is the definition.
(dungarees matches up with the definition something worn)
'out angered us' is the wordplay.
'out' indicates an anagram.
'angered'+'us'='angeredus'
'angeredus' anagrammed gives 'DUNGAREES'.
(Other definitions for dungarees that I've seen before include "Work overalls" , "protection at work" , "Durable overalls" , "garment" , "Hard-wearing work trousers with a bib" .)