buzzer

American  

[buhz-er] / ˈbʌz ər /

noun

1. a person or thing that buzzes.

2. a signaling apparatus similar to an electric bell but without hammer or gong, producing a buzzing sound by the vibration of an armature.

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buzzer British  

/ ˈbʌzə /

noun

1. a person or thing that buzzes

2. a device that produces a buzzing sound, esp one similar to an electric bell without a hammer or gong

3. a wood planing machine

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Etymology

Origin of buzzer

First recorded in 1600–10; buzz + -er ¹