eraser

Etymology

erase + -er

noun

  1. One who erases.
  2. (Canada, US) A thing used to erase or remove something written or drawn by a pen or a pencil.
    I have worn out the eraser on this pencil.
  3. (Canada, US) A thing used to erase something written by chalk on a chalkboard, by marker on a whiteboard, or by some other erasable implement; a chalkboard eraser, whiteboard eraser, etc.
  4. (computing) An overwriter program used to prevent data recovery.

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