Sound of bells (4)
I believe the answer is:
peal
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sound of bells</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for peal that I've seen before include "(Bells) ring" , "Deep prolonged sound" , "Prolonged sound of a bell" , "Loud burst of thunder - or laughter" , "Leap about to sound of bells" .)