eraser

Cambridge Advanced Learner's Dictionary - 4th Edition
 

eraser / ɪˈreɪ.zə r /   / -ˈreɪ.sɚ / noun [ C ] mainly US ( UK usually rubber )

eraser

A1 a small piece of rubber used to remove the marks made by a pencil:

If you draw or write in pencil you can always rub out your mistakes with an eraser.

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