car horn

Thesaurus

Noun

1.

car horn - a device on an automobile for making a warning noiseautomobile horn, motor horn, hooter, hornalarm system, warning device, alarm - a device that signals the occurrence of some undesirable eventauto, automobile, car, motorcar, machine - a motor vehicle with four wheels; usually propelled by an internal combustion engine; "he needs a car to get to work"horn button - a button that you press to activate the horn of an automobile