Buzzer n. One who, or that which, buzzes; a whisperer; a talebearer. "And wants not buzzers to infect his ear With pestilent speeches of his father's death."
... logical place for Nelsen to go, but he passed it by, following a hunch to his old street. She had almost said that she might come home, too. He touched the buzzer. ... — The Planet Strappers • Raymond Zinke Gallun