buzzer

• 发出嗡嗡声的电子信号装置，常用作门铃，或在游戏、问答中表示抢答或提示。

A noun referring to a signaling device that produces a buzzing sound, often used as a doorbell or in games to indicate a response or alert.

1. Doorbell or entry signalA2formal

   A button, typically located at an entrance, that produces a ringing or buzzing sound when pressed to alert someone inside.

   门铃

   • He pressed the buzzer and waited for someone to open the door.
   • The apartment buzzer was broken, so she had to call from her phone.
   • I rang the buzzer three times before anyone answered.

   同义词bellchimedoorbell

2. Signaling deviceA2formal

   An electronic device that emits a loud buzzing sound, often used in games, alarms, or timers.

   蜂鸣器

   • The contestant hit the buzzer to answer the question.
   • The timer's buzzer went off, signaling the end of the test.
   • The factory uses a buzzer to mark the start and end of shifts.

   同义词alarmbeeperbellhornklaxonsiren