Joust (4)
I believe the answer is:
tilt
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">joust</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that joust can be written as tilt)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for tilt that I've seen before include "Stab" , "Slope; use a lance in jousting" , "Joust; bias" , "Engage in a medieval joust - lean" , "Inclination, joust" .)