Wood file (4)
I believe the answer is:
rasp
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">wood file</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for rasp that I've seen before include "File - berry" , "Make a grating noise" , "Smoother" , "Abrade" , "fruit" .)