Redoubt reports of having exchanged blows (6)
I believe the answer is:
fought
'exchanged blows' is the definition.
(I've seen this before)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for fought that I've seen before include "Did battle" , "Opposed, struggled" , "Quarrelled" , "Battled" , "Through the courts opposed" .)