Clothing torn violently when defending goal (7)
I believe the answer is:
raiment
'clothing' is the definition.
(I know that raiment is a type of clothing)
'torn violently when defending goal' is the wordplay.
'torn violently' becomes 'rent' (past tense of 'rend' - to tear violently).
'when defending' means one lot of letters goes inside another (inserted letters are defended or protected).
'goal' becomes 'aim' (aim is a kind of goal).
'rent' enclosing 'aim' is 'RAIMENT'.
(Other definitions for raiment that I've seen before include "Clothing (archaic)" , "clothing for poets" , "Garment" , "Fancy clothes seen on minaret" , "Minaret (anag) - clothing" .)