From Longman Dictionary of Contemporary Englisherasere‧ras‧er /ɪˈreɪzə $ -sər/ ●●● noun [countable] 
Da small piece of rubber that you use to remove pencil or pen marks from paper SYN rubber British English
Da small piece of rubber that you use to remove pencil or pen marks from paper SYN rubber British EnglishExamples from the Corpus
eraser• Experiment 2 Suppose one of us tossed an eraser to you.• Each notebook has 48 pages and comes with its own pencil and eraser.• Roald Dahl sat in a garden shed with an array of pencils and erasers on a board across his knees.• The best solution is a bulk eraser that can take both sizes of floppy disk.• There was a Bic pen and a snap wallet, some Tums, and a rhinoceros-head eraser.• The electric current has been set to confuse a small brain area, about the size of a pencil eraser.• I then deliberately smudge the area with my fingers and pick out the highlights with a plastic eraser.• All it takes is some one to help, some one who cares, and the eraser of time. 