rubber [ˈrʌbɚ]

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¹ rubber noun

• a strong substance that stretches and that is made out of chemicals or from the juice of a tropical tree —often used before another noun
• eraser
• shoes or boots that are made of rubber and that fit over your regular shoes to keep them dry

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² rubber noun

• a contest that consists of a series of games and that is won by the player or team that wins the most games (such as two games out of three)
• a game that decides who will be the winner of a series of games—usually used before another noun