End wearing torn garment (7)
I believe the answer is:
raiment
'garment' is the definition.
(I know that garment can be written as raiment)
'end wearing torn' is the wordplay.
'end' becomes 'aim' (both can mean a purpose or goal).
'wearing' means one lot of letters goes inside another.
'torn' becomes 'rent' (synonyms).
'aim' put within 'rent' is 'RAIMENT'.
(Other definitions for raiment that I've seen before include "dress?" , "Wear" , "Something put on" , "Tire man (anag.)" , "Clothing (poetically)" .)