RESPIRATOR, N. An Apparatus Fitted Over The Nose And Mouth Of An
Inhabitant Of London, Whereby To Filter The Visible Universe In Its
Passage To The Lungs.
RESPIRATOR, n. An apparatus fitted over the nose and mouth of an
inhabitant of London, whereby to filter the visible universe in its
passage to the lungs.
-- Ambrose Bierce, "The Devil's Dictionary"