a strong substance that can be stretched and does not allow liquids to pass through it, used for making tyres, boots, etc. It is made from the liquid (= sap) inside a tropical plant or is produced using chemicals.

a small piece of rubber or a similar substance, used for removing pencil marks from paper; a piece of soft material used for removing chalk marks from a blackboard or pen from a whiteboard

a condom(= a thin rubber tube that a man wears over his penis during sex to stop a woman from becoming pregnant or to protect against disease)

(in some card games or sports) a competition consisting of a series of games or matches between the same teams or players

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