The AI-powered English dictionary
plural phonebooks
A directory of all the phone numbers used in a district. quotations examples
One even proposes, in a workaday monotone, that the first hundred people in any Idaho phonebook could do just as well as the legislators at making decisions in the capital.
2007 June 13, Virginia Heffernan, “Doing the People's Business, in All Its Somnolent Glory”, in New York Times
(by extension, computing) A large lookup table. quotations examples
He does this by using the Domain Name System, or DNS, which is the phonebook for the Internet.
2007 July 9, John Markoff, “Fixing Typos by Web Users, Without Raising Hackles”, in New York Times