Pennon (8)
I believe the answer is:
streamer
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">pennon</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that pennon can be written as streamer)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for streamer that I've seen before include "Long decorative strip of material" , "Ribbon - bad cold?" , "Banner headline; long strip" , "Long flag, often tapering" , "Paper ribbon - thin flag" .)