Chevalier (6)
I believe the answer is:
knight
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">chevalier</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for knight that I've seen before include "Heroic champion" , "Man on board" , "Male honoured by the British sovereign" , "Chivalrous warrior of olden times" , "Give title to; chess piece" .)