0 a type of cover made of a material that does not burn very easily, that you throw over flames to put them out or stop them from spreading:
The trunk contains standard safety equipment, such as flares, a first aid kit, fire extinguisher and safety blankets.
Safety blankets can be used to extinguish a fire on a person.
Her rescuers led her, wrapped in a safety blanket, out of the forest.
Try lining the base of your tent with a metallic safety blanket, shiny side up.