A bell, chime, or buzzer outside a door that is rung to announce the presence of a visitor or caller.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "doorbell" in a sentence
"And since we're on the second floor and our doorbell is broken, he announced his arrival by hurling a snowball at the window."
"When the sun goes down, we'll close the curtains, extinguish all the lights, make sure the doorbell is unplugged, and hide in the back room with the stereo on loud enough so that we don't hear their begging."
"And there was the red flashing light'the "doorbell" -above the entryway, flashing in her clear view."