Definition: Lib.php translates to "library," referring to a collection of scripts, stylesheets, and other resources used by websites. Here are the definitions: - lib (n): - A library, usually from an operating system or web framework like PHP. - php (n): - The programming language and framework that is used by the software you're accessing. Often referred to as "the server" in PHP, the programming language behind most websites. So, if your website uses a PHP-based library, it means the code under your website's root directory uses JavaScript libraries to handle various functionalities like HTML, CSS, or other technologies.