1. BIND (Berkeley Internet Name Domain) is an implementation of the DNS(Domain Name System) protocols. BIND includes a DNS server (named), which resolves host names to IP addresses; a resolver library (routines for applications to use when interfacing with DNS); and tools for verifying that the DNS server is operating properly. From Redhat 8.0 RPM

2. Internet Domain Name Server The Berkeley Internet Name Domain (BIND) implements an Internet domain name server. BIND is the most widely-used name server software on the Internet, and is supported by the Internet Software Consortium, www.isc.org. From Debian 3.0r0 APT