Star-shaped symbol (8)
I believe the answer is:
asterisk
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">star-shaped symbol</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 asterisk that I've seen before include "Star of typography" , "Star-like symbol as reference mark" , "Star-shape on the page" , "Sign" , "Text-marking symbol" .)