(ek′ō) noun plural ·oes
1. The sound produced by the reflection of sound waves from an opposing surface.
2. Reproduction of another's views or thoughts; a close imitation.
3. Prompt response.
4. The repetition of a musical phrase in soft tone; an echo-stop; an echo-organ.
5. A verse construction wherein one line repeats the last syllable or syllables of the line preceding.
6. Telecom. A retarded sound wave in radio reception; a signal received in addition to or later than the expected one.
7. In bridge, the play of a conventional card after a lead, to inform one's partner.
—v.t.
1. To repeat or send back (sound) by echo: The walls echoed the shot.
2. To repeat the words, opinions, etc., of.
3. To repeat (words, opinions, etc.) in imitation of another.
—v.i.
4. To give back sound; reverberate.
5. To be repeated or given back; resound. [<L <Gk. ēchō]
—ech′o·er noun

(ek′ō)
In Greek mythology, a nymph who, because of her unrequited love for Narcissus, pined away until only her voice was left.