Repeated sound (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">repeated sound</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 echo that I've seen before include "Reflection of sound - Greek nymph" , "A natural sound reflection" , "Reverberate - nymph spurned by Narcissus" , "call back" , "'Greek nymph, she pined away until only her voice remained (4)'" .)
(Other definitions for echoed that I've seen before include "copied" , "said nothing original" , "Rang" , "Resounded" , "Reverberated; repeated" .)