After the "www", the next bit is called "domain name" e.g. in www.exampleweb.com "exampleweb" is the domain name. More specifically it is also called "second-level domain name", the first-level domain name being the "com" at the end.
Domain name
domain
domain type
The "WWW" at the beginning of an address stands for World Wide Web.
www as used in www.AOL.com or any other website address, is an abbreviation for world wide web.
WWW is an identifier, it is the HTTP suffix, and the address prefix.
www stands for world wide web
it means World Wide Web.
The web address of the Thirteenth Floor is: http://www.13thfloorgallery.com
The web address of the 1708 Gallery is: http://www.1708gallery.org
The web address of the 1078 Gallery is: http://www.1078gallery.org
The web address of the 621 Gallery is: http://www.621gallery.org