Punch-up (4,5)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">punch-up</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for fist fight that I've seen before include "scrap" , "punch-up" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">punch-up</span>' is the definition.<br/ ><span class="explanation-format__explanation">(both can mean a fight)</span><br/ ><br/ >This is all the clue.<br/ ></span>