Pause is not required in fight (4)
I believe the answer is:
rest
'pause' is the definition.
(I know that rest is a type of pause)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for rest that I've seen before include "Tranquillity" , "Balance" , "Holiday" , "Remain" , "Repose - remainder" .)