Legal wrong (4)
I believe the answer is:
tort
'legal wrong' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for tort that I've seen before include "Trot after legal offence" , "Trot after legal wrong liable to damages" , "A legal wrong open to claim for damages" , "Act for which damages can be claimed" , "Private or civil wrong open to damages" .)