Meaning of DOMAIN in English

(INTERNET) [noun] [C] - a part of the Internet that belongs to a person or organisation where they can access e-mail or display documents on the Internet(specialized) A domain name is the part of an e-mail or website address that shows the name of the organisation that the address belongs to.Businesses trying to give their web sites memorable names have become involved in costly domain name disputes (= legal arguments about who can use a particular name as an address).See study section: The Internet

Cambridge English vocab.      Кембриджский английский словарь.