Heavy glove (8)
I believe the answer is:
gauntlet
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">heavy glove</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 gauntlet that I've seen before include "It may be thrown down or run" , "Handy thing to take up" , "Throw it down to offer a challenge" , "Metal glove of medieval soldiers" , "Throw this glove down as a challenge" .)