safety device

Noun
  1. A device designed to prevent injury or accidents (synset 103469399)
    is a type of: device - an instrumentality invented for a particular purpose
    subtypes:
    • 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
    same as: guard, safety

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