Fight, scuffle (6)
I believe the answer is:
tussle
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">fight</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that tussle is a type of fight)</span><br/ ><br/ >'<span class="explanation-format__original">scuffle</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that scuffle can be written as tussle)</span><br/ ><br/ ></span>
(Other definitions for tussle that I've seen before include "'Physical fight, struggle (6)'" , "Rough and tumble" , "A struggle or conflict" , "Grapple" , "Go at it" .)