Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun buzzer

2 senses of buzzer

Sense 1
doorbell, bell, buzzer -- (a push button at an outer door that gives a ringing or buzzing signal when pushed)
       => push button, push, button -- (an electrical switch operated by pressing; "the elevator was operated by push buttons"; "the push beside the bed operated a buzzer at the desk")

Sense 2
buzzer -- (a signaling device that makes a buzzing sound)
       => signaling device -- (a device used to send signals)