Set of rounds (4)
I believe the answer is:
bout
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">set of rounds</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for bout that I've seen before include "Spell of eg drinking" , "Wrestling/boxing match" , "Contest; illness episode" , "period in ring" , "Attack (of illness)" .)