资料来源 : Free On-Line Dictionary of Computing

virtual host
     
         Most computers on the {Internet} have a single
        {Internet address}; however, often via special {kernel}
        patches, a given computer can be made to respond to several
        {IP} addresses and provide different {services} (typically
        different {Web} services) on each.  Each of these different IP
        addresess (which generally each have their own {hostname}) act
        as if they were distinct hosts on distinct machines, even
        though they are actually all one host.  Hence, they are
        {virtual} hosts.  A common use is when an {Internet Service
        Provider} "hosts" {World-Wide Web} or other services for
        several of their customers on one computer but giving the
        appearence that they are separate servers.
     
        (1997-09-11)