A device which prevents unintentional functioning.
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  safety device - a device designed to prevent injury or accidentsdevice - an instrumentality invented for a particular purpose; "the device is small enough to wear on your wrist"; "a device intended to conserve water" fender - a low metal guard to confine falling coals to a hearth safety catch, safety lock - guard consisting of a locking device that prevents a weapon from being fired |
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