(pronounced: ay-lee-us)

On a server, an alias maps an incoming request for a Web page. When an alias is found in a URL, the alias' value is substituted in place of the alias. For example, if you have Web pages on a server that you wish to display on the Internet, the actual location of those files may be "" but with the use of an alias, you can tell people to access the site at "" -- in this case, the tilde (~) represents an alias for the path, /user/.

See also : tilde or ~  
NetLingo Classification: Technical Terms