A device designed to allow breathing when it would otherwise be hindered, as by a medical condition or the presence of poisonous vapors
The house painters were each officially required to wear a respirator, but this was sometimes disregarded in the extreme heat.
A respirator is a device that allows people to breathe when they cannot breathe naturally, for example because they are ill or have been injured. She was so ill that she was put on a respirator
A filtering device which covers the nose and mouth and prevents inhalation of dust or fumes; should have the U S Bureau of Mines certificate or approval for the specific contaminant being filtered out Handkerchiefs and gauze masks give little or no protection
A device worn by workers to protect themselves from breathing harmful contaminants
{i} device used for artificial respiration in patients who cannot breathe independently (Medicine); gas mask, mask that protects against poisonous fumes (British); mask that prevents inhalation of dangerous substances
a device worn over the nose and mouth to prevent the wearer from inhaling harmful substances
a protective mask with a filter; protects the face and lungs against poisonous gases