Auctioneer's mallet (5)
I believe the answer is:
gavel
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">auctioneer's mallet</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for gavel that I've seen before include "An auctioneer's wooden hammer" , "Judicial hammer" , "Small mallet" , "Judge's hammer" , "Ceremonial mallet" .)