warning device

Thesaurus

Noun

1.

warning device - a device that signals the occurrence of some undesirable eventalarm system, alarmautomobile horn, car horn, motor horn, hooter, horn - a device on an automobile for making a warning noiseburglar alarm - a warning device that is tripped off by the occurrence of a burglarydevice - an instrumentality invented for a particular purpose; "the device is small enough to wear on your wrist"; "a device intended to conserve water"smoke alarm, fire alarm - an alarm that is tripped off by fire or smokehorn - an alarm device that makes a loud warning soundsiren - an acoustic device producing a loud often wailing sound as a signal or warning

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