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[ih-rey-ser] /ɪˈreɪ sər/
a device, as a piece of rubber or cloth, for erasing marks made with pen, pencil, chalk, etc.
a person or thing that erases.
1780-90; erase + -er1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for eraser
  • At the end of the day, no matter how fancy, a pencil is only as good as its eraser.
  • Certainly it is easier to edit and rewrite papers electronically than with pencil and eraser.
  • The land looked as though a giant eraser had rubbed back and forth over it.
  • Over the next several weeks, it grew to the size of a pencil eraser tip.
  • Yet for all the evidence of destruction, scientists could not figure out where the eraser was hidden.
  • If you make a mistake you can select the eraser and rub out the paint from a given area.
  • The built-in pencil eraser, though largely unchanged for decades, is far from a perfect invention.
  • Typically, your health care provider will test for this sign simply by twisting a pencil eraser against your skin.
  • Unlike tender points, trigger points are often small lumps, about the size of a pencil eraser.
  • Hold the single eraser out from the spool, parallel to the floor.
British Dictionary definitions for eraser


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
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Word Origin and History for eraser

"thing that erases writing," 1790, American English, agent noun from erase. Originally a knife for scraping off the ink. As a rubber product for removing pencil marks, from 1858.

Online Etymology Dictionary, © 2010 Douglas Harper
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Slang definitions & phrases for eraser



A knockout or a knockout punch (1940s+ Prizefight)

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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Related Abbreviations for eraser


enhanced recognition and sensing radar
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Encyclopedia Article for eraser

piece of rubber or other material used to rub out marks made by ink, pencil, or chalk. The modern eraser is usually a mixture of vegetable oil, fine pumice, and sulfur bonded with rubber. The mix is processed, extruded, and vulcanized in rubber-processing equipment. In 1752 the Proceedings of the French Academy reported a suggestion for using caoutchouc, a vegetable gum produced by certain South American trees, to erase black lead marks. Caoutchouc was named rubber in 1770 by the English chemist Joseph Priestley, because it was used to rub out marks. The first patent on an integral pencil and eraser was issued in the United States to Joseph Rechendorfer of New York City on March 30, 1858.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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