echo

noun

1.
the repetition of a sound resulting from reflection of the sound waves
send back wave back replication reverberation sound reflection
Derived from:
echo
2.
a reply that repeats what has just been said
Derived from:
echo
3.
a reflected television or radio or radar beam
4.
a close parallel of a feeling, idea, style, etc.
5.
an imitation or repetition