1. to replace existing data or text with new data or text
Usage: computing
2. to write over existing text or marks

Examples

• The new file will overwrite the old one if you save it with the same name.
• Be careful not to overwrite your important documents.
• The software automatically overwrites temporary files.
• She accidentally overwrote her essay and lost all her changes.
• The child overwrote his pencil marks with a pen.
• The system will overwrite the backup data every night.
• Make sure to create a copy before you overwrite the original file.