Crossword Genius

Sign of hollowness (4)

Ross

I believe the answer is:

echo

'sign of hollowness' 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 "Repeat or reverberate" , "The distant sound" , "Sound heard before" , "Reflected sound" , "Reiterate" .)

I've seen this clue in the L.A. Times Daily, the LA Times and The Washington Post.
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