Grating or rough (8)
I believe the answer is:
abrasive
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">grating</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">rough</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ ></span>
(Other definitions for abrasive that I've seen before include "Overly aggressive" , "Pumice, for example" , "Harsh - chafing" , "Rough, grating" , "Wearing" .)