Definitions

1. noun

a device that produces a sharp, high-pitched sound, typically to signal a warning or a fault

“The alarm system has a loud buzzer that will go off if anyone tries to break into the house.”

2. verb

to make a high-pitched sound, typically as a warning or to signal a fault

“The wire is faulty and will start to buzz if you connect it to the wrong socket.”

3. noun

a device used in games and quizzes, especially to signal a correct or incorrect answer

“The buzzer in the quiz show went off when the contestant gave a correct answer.”

4. verb

to signal a correct or incorrect answer in a game or quiz

“The host buzzes the contestants if they answer a question incorrectly.”