Korean martial art (3,4,2)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">korean martial art</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for tae kwon do that I've seen before include "Martial activity" , "Koreans fighting" , "combat" , "Martial art Olympic event since 2000" , "Martial art display" .)
(Another definition for taekwondo that I've seen is " event".)