Sound reflection (4)

I believe the answer is:

echo

I believe this clue is a double definition.

'sound' is the first definition.
(I know that echo is a type of noise)

'reflection' is the second definition.
(I know that echo is a type of reflection)

(Other definitions for echo that I've seen before include "Bounced sound" , "Let's hear it again for the Greek nymph who loved Narcissus in vain" , "E; reverberation" , "Ape" , "Imitate -- a nymph" .)

I've seen this clue in The Times, The Globe and Mail, the LA Times, The Irish Independent and The Telegraph.

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