noun🔗ShareA directory of all the phone numbers used in a district."To find the number for the local bakery, I looked it up in the phone book. "communicationlisttechnologyutilityservicewritingdeviceChat with AIVocabulary GamePractice Reading
noun🔗Share(by extension) A large lookup table."The school's internal phone book is a large lookup table that helps staff quickly find each student's contact information. "technologycomputingcommunicationinternetChat with AIVocabulary GamePractice Reading