Definitions of internet domain name on the Web:

• A domain name is an identification label to define realms of administrative autonomy, authority, or control in the Internet, based on the Domain ...
  en.wikipedia.org/wiki/Internet_domain_name
• The Internet name for a network or computer system. The name consists of a sequence of characters separated by periods, such as www.mwc.edu. ...
  webliminal.com/essentials/glossary.htm
• Unified Resource Locator.(www.yourcompanyname.com.au). Every organisation that wants a web site up and running on the internet needs to purchase a ...
  www.swritservices.com.au/pages/internet_terminology.htm
• The unique name that identifies an Internet entity.
  www.expedite-email-marketing.com/internet_marketing_glossary_internetmarketingtermsdefinition.htm