Noah Webster
Echo
ECH'O, noun [Latin echo; Gr.sound, to sound.]
1. A sound reflected or reverberated from a solid body; sound returned; repercussion of sound; as an echo from a distant hill.
The sound must seem an echo to the sense.
2. In fabulous history, a nymph, the daughter of the Air and Tellus, who pined into a sound, for love of Narcissus.
3. In architecture, a vault or arch for redoubling sounds.
ECH'O, verb intransitive To resound; to reflect sound.
The hall echoed with acclamations.
1. To be sounded back; as echoing noise.
ECH'O, verb transitive To reverberate or send back sound; to return what has been uttered.
Those peals are echoed by the Trojan throng.