Definition of "eraser" in English

noun

1. One who erases.

2. (Canada, US, Philippines) An object 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, Philippines) An object used to erase something written either by chalk on a chalkboard, by a 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.