Grinding implement (6)
I believe the answer is:
pestle
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">grinding implement</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for pestle that I've seen before include "Partner to the mortar" , "Small club for use with mortar" , "Grinder for mortar" , "Tool for pounding or grinding" , "A grinder or pounder" .)