n. The act of erasing, or rubbing or scraping out or off; obliteration. Also erasion.n. An instance of erasing, or that which has been erased, scratched out, or obliterated; the place where something has been erased or obliterated: as, there were several erasures in the document.n. The act of razing or destroying to the foundation; total destruction: as, the erasure of cities.