Tool used with a mortar (6)
I believe the answer is:
pestle
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">tool used with a mortar</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for pestle that I've seen before include "Instrument for pounding spices etc" , "Small club, goes with mortar" , "Partner to the mortar" , "found at pound shop?" , "Kitchen item" .)