: a sound that is a copy of another sound and that is produced when sound waves bounce off a surface (such as a wall)
: something (such as a feature or quality) that repeats or resembles something else
: something that is similar to something that happened or existed before
: to be filled with sounds and especially with echoes
: to fill a space, area, etc., with sounds and especially with echoes
: to repeat (what someone else has said or written)
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