Pay back bruiser with me given thrashing (9)
I believe the answer is:
reimburse
'pay back' is the definition.
(I've seen this in another clue)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for reimburse that I've seen before include "Financially compensate" , "Repay - reuse brim" , "Pay back any expenses incurred" , "Repay a person who has spent or lost money" , "Compensate for money already spent" .)