A more thorough explanation:

Definition: Rasure (ray-zhər) is the act of scraping or shaving the surface of a document to remove the writing from it, also known as erasure. It can also refer to complete obliteration.

Example: The spy used a razor blade to perform a rasure on the top secret document, removing any evidence of his involvement.

Explanation: In this example, the spy used a razor blade to scrape off the writing on the document, effectively performing a rasure. This action removed any evidence of his involvement in the document's contents.

Example: The historian discovered a rasure in the ancient manuscript, indicating that someone had attempted to erase a portion of the text.

Explanation: In this example, the historian found evidence of a rasure in an ancient manuscript, suggesting that someone had attempted to erase a portion of the text. This demonstrates how rasure can be used to remove or obscure information from a document.