The term 'PART OF WWW ADDRESS' can be solved by the three letter word 'WEB'. The World Wide WEB, commonly referred to as the WEB, is a system of interlinked hypertext documents accessed via the Internet. A WEB address, or URL, is the address of a specific WEB page on the WEB. The first part of a WEB address is known as the domain name and is followed by the top-level domain, such as .com or .org. The WEB is the most common top-level domain used for websites.