Stun with noise (6)
I believe the answer is:
deafen
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">stun with noise</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 deafen that I've seen before include "Drown out" , "Overwhelm with sound" , "Cause to lose hearing as from explosion" , "Cause to lose sense of hearing" , "Cause to lose the power of hearing" .)