Definition of red rot:
(n) :
(phytopathology) A disease of sugar cane caused by the fungus Glomerella tucumanensis.
(n) :
A degradation process in vegetable-tanned leather, caused by humidity, environmental pollution, and high temperature, and resulting in a powdery surface and structural weakness.
(n) :
(metallurgy) A degradation process in brass where chemical dezincification of the brass alloy leaves behind fragile or powdery copper metal.