echo

noun

1. (countable, uncountable)A reflected sound that is heard again by its initial observer.

   “The babbling echo mocks the hounds.”

   “To you I mourn; nor to the Deaf I ſing, / The Woods ſhall anſwer, and their Echo ring.”

   ““Then what is your little trouble?” “My little trouble!” I felt that this sort of thing must be stopped at its source. It was only ten minutes to dressing-for-dinner time, and we could go on along these lines for hours. “Listen, old crumpet,” I said patiently. “Make up your mind whether you are my old friend Reginald Herring or an echo in the Swiss mountains. If you're simply going to repeat every word I say –””

   “Earless ghost swift moths become “invisible” to echolocating bats by forming mating clusters close (less than half a meter) above vegetation and effectively blending into the clutter of echoes that the bat receives from the leaves and stems around them.”

2. (countable, uncountable)An utterance repeating what has just been said.
3. (countable, uncountable)A device in verse in which a line ends with a word which recalls the sound of the last word of the preceding line.
4. (countable, figuratively, uncountable)Sympathetic recognition; response; answer.

   “Fame is the echo of actions, resounding them.”

   “Many kind, and sincere speeches found an echo in his heart.”

5. (countable, figuratively, uncountable)Something that reflects or hearkens back to an earlier thing.

   “The frustration with the political process that in the '60s led to the formation of resistance groups finds an echo in today's increasingly confrontational tactics.”

6. (countable, figuratively, uncountable)An insignificant indirect result; a ripple.
7. (countable, uncountable)The displaying on the command line of the command that has just been executed.
8. (countable, uncountable)An individual discussion forum using the echomail system.

   “When someone asks an off-topic question […] they are usually quickly told to knock it off. You can't ask a question about modems in an echo devoted to local-area networks.”

9. (alt-of, countable, uncountable)Alternative letter-case form of Echo from the NATO/ICAO Phonetic Alphabet.
10. (countable, uncountable)A signal, played in the same manner as a trump signal, made by a player who holds four or more trumps (or, as played by some, exactly three trumps) and whose partner has led trumps or signalled for trumps.
11. (countable, uncountable)A signal showing the number held of a plain suit when a high card in that suit is led by one's partner.
12. (countable, uncountable)An antisemitic punctuation symbol or marking, ((( ))), placed around a name or phrase to indicate the person is Jewish or the entity is controlled by Jewish people; or repurposed or reclaimed to proudly declare one's Jewishness or solidarity with Jews.
13. (abbreviation, alt-of, clipping, colloquial, uncountable)Clipping of echocardiography.
14. (abbreviation, alt-of, clipping, colloquial, countable)Clipping of echocardiogram.

    “[…] his echocardiogram had been read as normal. […] Joseph interrupted, "But my echo was normal. How could it be my heart?"”

verb

1. (intransitive)Of a sound or sound waves: to reflect off a surface and return; to reverberate or resound.

   “With each clap of thunder echoing from one high building to another the noise was terrific.”

2. (figuratively, intransitive)Of a rumour, opinion, etc.: to spread or reverberate.

   “The sense that it takes outrageous fortune to get inoculated echoes here in the Bay Area, where pharmacies have canceled flu-shot clinics, doctors turn away pleading patients and health officials are reduced to telling panicked callers that they should practice good personal hygiene.”

3. (transitive)To reflect back (a sound).

   “Those peals are echoed by the Trojan throng.”

   “The wondrous sound / Is echoed on forever.”

4. (figuratively, transitive)To repeat (another’s speech, opinion, etc.).

   “Sid echoed his father’s point of view.”

   “‘I want nothing.’ ‘Nor I,’ echoed Sydney.”

   “Some poems, echoing the purpose of early poetic treatises on scientific principles, attempt to elucidate the mathematical concepts that underlie prime numbers. Others play with primes’ cultural associations. Still others derive their structure from mathematical patterns involving primes.”

   “His views were echoed by The Economist, which feared that the effects of modernisation would be no more than “chromium-plated” inefficiency caused by unimaginative railway management and adverse union reaction.”

5. (transitive)To repeat its input as input to some other device or system.

   “The device that is to echo the characters should be optioned for echoplexing.”

6. (intransitive)To give the echo signal, informing one's partner about cards one holds.

name

1. (Greek)An oread, punished by Hera by losing her own voice and only being able to mimic that of others.
2. A number of places in the United States:
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10. A number of places in the United States:

    “Experts say the smallest towns are especially vulnerable. And few places in Utah are as tiny or dry as Echo, a jumble of homes squeezed between a freight railroad and stunning red-rock cliffs. Echo was already struggling to hang on after the two cafes closed down. Then its spring-fed water supply hit critical lows this summer.”

11. A number of places in the United States:
12. 60 Echo, a main belt asteroid.