megaphone

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megaphone

[′meg·ə‚fōn]
(acoustics)
A conical or rectangular horn used to amplify or direct the sound of a speaker's voice.
References in periodicals archive ?
In their entry on metalepsis, Holman and Harmon locate a dozen figures or tropes in the line, including rhetorical question, metonymy, metaphor, hyperbole, and paradox, and they emphasize the further compression of meaning in its "elementary reference to water and fire, a deletion of all human elements, and emphatic alliteration and megaphonic lambs with very short syllables and long ones.
It came from the bushes, a megaphonic, anonymous, loud-speaking affirmation" (186).