Two-person contest (4)
I believe the answer is:
duel
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">two-person contest</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 duel that I've seen before include "Contest to settle point of honour" , "One got satisfaction from this" , "Single combat" , "Affaire d'honneur" , "Gentlemen's disagreement" .)