Japanese fencing (5)
I believe the answer is:
kendo
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">japanese fencing</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 kendo that I've seen before include "Japanese art of fencing with staves" , "discipline" , "Japanese fencing with bamboo staves" , "Japanese fighting" , "Marrtial art" .)