plural of safety helmet

Any helmet designed to protect the head from accidental injury, such as a bicycle helmet or construction helmet.

plural of safety stock

plural of safety razor

A razor, designed for safety, that protects the skin from all but the very edge of the blade (as opposed to a straight razor).

A miner's lamp designed to avoid explosion by enclosing the flame in fine wire gauze.

plural of safety lamp

plural of safety match

plural of safety net

A match designed so it can only be ignited on a special friction surface.