Knight fight (4)
I believe the answer is:
tilt
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">knight fight</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 tilt that I've seen before include "Lean, slope" , "Inclination, joust" , "Aquired skill; trick" , "Lean sideways" , "Incline - joust" .)