Round ender (4)
I believe the answer is:
bell
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">round ender</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 bell that I've seen before include "Wide end of a trumpet" , "eg Big Ben" , "Instrument making ringing sound" , "pen name" , "kind of curve" .)