What is blank? How to use in English

One theory is that the word "blank" came from the Old English word "blank", which referred to the white or blank pages in a manuscript. This sense of the word was later extended to describe a page without writing or printing. In the 14th century, "blank" took on a new meaning, referring to something that was empty, empty, or contained nothing. This sense of the word is still used today in phrases like "blank slate" or "blank check". Over time, the spelling of the word evolved from "blanc" to "blank", but its core meaning remains the same – a reference to a lack or absence of content or substance.