Shiny decoration (6)
I believe the answer is:
tinsel
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">shiny decoration</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 tinsel that I've seen before include "Sparkly decoration" , "Gaudy decoration" , "Glittering metal foil strip" , "Christmas foil" , "Cheap and gaudy metallic material" .)