Fight like a knight (4)
I believe the answer is:
tilt
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">fight like a knight</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" , "Slope, slant" , "Joust; bias" , "Move into a sloping position, say a lance" , "Incline, slant" .)