Run naked (6)
I believe the answer is:
streak
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">run naked</span>' is the definition.<br/ ><span class="explanation-format__explanation">(to streak is to run around naked)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for streak that I've seen before include "Naked public appearance" , "Long band" , "irregular line of colour" , "Run naked as stunt" , "run? Barely!" .)