buzzer
/ˈbʌzər/
noun
- A device that makes a buzzing sound, often used as a signal or alarm.
- He pressed the buzzer to get the delivery person's attention.
- The game show contestant hit the buzzer to answer the question.
- The buzzer on the microwave went off, signaling that the popcorn was ready.
- A doorbell or intercom system that makes a buzzing sound when activated.
- The apartment buzzer was broken, so she had to call from her phone.
- He installed a video buzzer for extra security.
- I rang the buzzer, but no one answered the door.