buzzer

Plural: buzzers

Noun

• An electrical device that produces a buzzing sound as a signal.
• a push button at an outer door that gives a ringing or buzzing signal when pushed
• a signaling device that makes a buzzing sound
• One who, or that which, buzzes; an insect that buzzes.
• A device that makes a buzzing sound.
• A police badge.
• A run scored from an overthrow.
• A gossip.

Examples

• If you think you know the answer to the question, hit the buzzer as fast as you can.
• When the timer’s BUZZER sounded, he realized he’d run out of time for his move.

Synonyms

bell, doorbell