Dictionary.com
Thesaurus.com

eraser

American  
[ih-rey-ser] / ɪˈreɪ sər /

noun

  1. a device, as a piece of rubber or cloth, for erasing marks made with pen, pencil, chalk, etc.

  2. a person or thing that erases.


eraser British  
/ ɪˈreɪzə /

noun

  1. an object, such as a piece of rubber or felt, used for erasing something written, typed, etc

    a pencil eraser

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of eraser

First recorded in 1780–90; erase + -er 1