Definitions for "Root Servers"
The set of servers which keep the definitive record of what nameservers are responsible for what domains, as well as details of the domains' registration status, which is refered to by nameservers when looking up domain names.
The root servers are nameservers that all other nameservers on the Internet know about, and contain very basic information about the DNS system, which will lead other servers along the path to finding out specific information about a host. ()
A distributed set of systems that are essential to the operation of the DNS. They contain a directory of the names and IP addresses of the name servers of every second level domain under the generic top level domains.