Bullhorn

//ˈbʊlˌhɔɹn// noun

Definitions

Noun
  1. 1
    A megaphone which electronically amplifies a person’s natural voice. US

    "Iʼll press the trigger, and with a loud squeal of ear-piercing feedback, the bullhorn buzzes to staticky life."

  2. 2
    a portable loudspeaker with built-in microphone and amplifier wordnet

Etymology

From bull + horn, attested since the 1950s.

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