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.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI