Wield a mop (4)
I believe the answer is:
swab
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">wield a mop</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 swab that I've seen before include "Mop; surgical pad" , "Cleaning implement" , "Absorbent pad for cleansing or drying" , "Piece of fabric for medical use" , "Absorbent surgical pad" .)