Samurai code
I believe the answer is:
bushido
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">samurai code</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 bushido that I've seen before include "honourable code" , "Code for old military" , "code of honour" , "Feudal code of the Samurai" , "Strict ethical code of Japanese samurai" .)