Canyon rebound (4)
I believe the answer is:
echo
'canyon rebound' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for echo that I've seen before include "In The Maid of the Mountains" , "Repeated sound" , "What evokes memories" , "Greek girl in love with Narcissus" , "Sound returning some moments later" .)