Fix bent rapier (6)
I believe the answer is:
repair
'fix' is the definition.
(to fix something is to repair it)
'bent rapier' is the wordplay.
'bent' is an anagram indicator.
'rapier' with letters rearranged gives 'REPAIR'.
(Other definitions for repair that I've seen before include "Maintain" , "Restore (something) to good condition" , "Fix, mend" , "Make one's way (to); fix" , "Travel or proceed toward some place" .)