Echo

For the anti-Semitic symbol, see Triple parentheses.

An echo is the apparent repetition of a sound when the sound waves are reflected, typically in a large, empty space.

Echo was also a nymph in Greek mythology. Because of an affair she had with Zeus, she was cursed by Hera to be able to speak only by repeating what she heard (like an echo).

Echo, like all other nymphs, was in love with the handsome mortal Narcissus. Having no interest in love, Narcissus scorned her, and she pined away until only her voice remained.