Ringing instrument (4)
I believe the answer is:
bell
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ringing instrument</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 bell that I've seen before include "Tinkler" , "Scottish-born inventor of the telephone, d. 1922" , "End of oboe; inventor of telephone" , "inventive fellow" , "Boxing match signal" .)