URL

noun5

1. •
   A domain name.

   • Google itself has even been accused of profiting from the work of cybersquatters who buy URLs that are near to famous ones, but which often get mistyped–a practice known as typosquatting. — 2010
2. •
   (Internet) The username associated with a Tumblr blog and typically included in its URL.
3. •
   Initialism of Uniform Resource Locator: the address of a web page, FTP site, audio stream or other Internet resource.

   • https://en.wiktionary.org/ is the URL of the English Wiktionary.
4. •
   Initialism of upper reference limit.
5. •
   (US) Initialism of unrestricted line officer.