Canyon's return (4)
I believe the answer is:
echo
'canyon's return' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for echo that I've seen before include "In Roman mythology, the nymph who loved Narcissus" , "Trace call" , "Reverberation of sound" , "Mythical nymph" , "Repeat or reverberate" .)