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Longman Dictionary of Contemporary English
car alarm
noun
EXAMPLES FROM CORPUS
▪ Down among the orange lamps a broken car alarm marked out the time.
▪ Have you ever noticed the response when a car alarm goes off in a busy street?
▪ He set the car alarm, and went up to the door.
▪ In my San Francisco neighborhood, some one has a car alarm.
▪ She breaks the window of the black car - and the car alarm goes off!
Wiktionary
car alarm

n. An audible and often visible alarm that is activated when a motor car/automobile is tampered with.

Wikipedia
Car alarm

A car alarm is an electronic device installed in a vehicle in an attempt to discourage theft of the vehicle itself, its contents, or both. Car alarms work by emitting high-volume sound (usually a siren, klaxon, pre-recorded verbal warning, the vehicle's own horn, or a combination thereof) when the conditions necessary for triggering are met, as well as by flashing some of the vehicle's lights, and (optionally) notifying the car's owner via a paging system and interrupting various electrical circuits necessary for the car to start.

Car Alarm (album)

Car Alarm is an album by The Sea and Cake, which was released on October 21, 2008 on Thrill Jockey Records.

Car Alarm (disambiguation)

A car alarm is an electronic security device for vehicles

Car Alarm may also refer to:

  • Car Alarm (album), 2008 album by The Sea and Cake
  • "Car Alarm", 2007 TV series episode from Kim Possible

Usage examples of "car alarm".

He had only to risk the telltale rattle of a door knob or an unsuspected car alarm.

The sudden blare of a car alarm ripped a short scream out of her throat.

Windsor lifted the heavy gun in both hands and pointed it at Per's face, trying to ignore the car alarm's incessant screaming.

Avi opens his mouth to respond, but just then the animists trigger their car alarm.

The afternoon was calm and flags were wilted over roofs and lawns, and somewhere a car alarm would not stop.

He spoke loudly, for he could hear the car alarm both directly and, more faintly, over the telephone.

It was the remote control for a car alarm, but its receiver wasn't in any car.

There was even a postmodern car alarm, which trilled out a fruity compendium of all other car alarms.

I crawled down the highway, getting some very interested looks from some of the snow bunnies, parked in our lot, put the top up, grabbed the indoor silent car alarm, and carried her small suitcase up the stairs and into my room.

From a side street, to my left, I could hear a car alarm crying, and the sound seemed to carry like the howling of a wolf.

The car horn was loud and shrill and the sound pattern kept repeating itself, like a car alarm that had been activated.

The tired blonde behind the counter shrieked with the regularity and volume of a car alarm.