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An airtight metal tank that encloses all of the body except the head and forces the lungs to inhale and exhale through regulated changes in air pressure.
1. (Medicine) an airtight metal cylinder enclosing the entire body up to the neck and providing artificial respiration when the respiratory muscles are paralysed, as by poliomyelitis
2. informal Irish a gas container used in dispensing beer
a rigid respirator that encloses the whole body except the head and in which alternate pulsations of high and low pressure induce normal breathing movements or force air into and out of the lungs.
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|Noun||1.||iron lung - respirator that produces alternations in air pressure in a chamber surrounding a patient's chest to force air into and out of the lungs thus providing artificial respiration|