Loud resonant noise (5)
I believe the answer is:
clang
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">loud resonant noise</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 clang that I've seen before include "Metallic ring" , "Noise as of cymbals" , "Ring of metal" , "Jangle" , "Toll of a bell" .)