Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “rubber”

rubber

noun [C/U]  /ˈrʌb·ər/ us  
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 from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of rubber?
Add Cambridge dictionaries to your browser to your website

More American English definitions for “rubber”

Definitions of “rubber” in other dictionaries

Word of the Day

pint

a measure for liquid equal to about half a litre

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More