Cover damaged urn in case (9)
I believe the answer is:
insurance
'cover' is the definition.
(I've seen this before)
'damaged urn in case' is the wordplay.
'damaged' is an anagram indicator.
'urn'+'in'+'case'='urnincase'
'urnincase' with letters rearranged gives 'INSURANCE'.
(Other definitions for insurance that I've seen before include "Such a policy guarantees" , "security" , "Promise of reimbursement in the case of loss" , "Guarantee of compensation in return for a premium" , "One's questioned taking this out" .)