Traditional story or myth (6)
I believe the answer is:
legend
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">traditional story</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">myth</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for legend that I've seen before include "Story about mytical beings" , "extremely famous person?" , "The story of Achilles, say" , "Ancient story" , "explanation" .)