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English definition of “rubber”

rubber

noun [C/U]    /ˈrʌb·ər/
an elastic, waterproof substance made either from the juice of a tree that grows in hotter parts of the world or artificially: [U] rubber boots/gloves [U] Tires are made of rubber. Br A rubber is an eraser. Rubbers are waterproof shoes made of rubber, which are worn over regular shoes to keep them dry: [pl] Wear your rubbers – it’s raining.
(Definition of rubber noun from the Cambridge Academic Content Dictionary © Cambridge University Press)
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