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buzzer

Definitions of buzzer
  1. noun
    a signaling device that makes a buzzing sound
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    type of:
    signaling device
    a device used to send signals
  2. noun
    a push button at an outer door that gives a ringing or buzzing signal when pushed
    synonyms: bell, doorbell
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    types:
    night bell
    a doorbell to be used at night
    type of:
    button, push, push button
    an electrical switch operated by pressing
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