switchboard Syllabification: (switch·board)Pronunciation: /ˈswiCHˌbôrd/Translate switchboard | into French | into German | into Italian | into Spanish Definition of switchboard noun an installation for the manual control of telephone connections in an office, hotel, or other large building. another term for helpline. an apparatus for varying connections between electric circuits in other applications. switchboard in other Oxford dictionaries Definition of switchboard in the British & World English dictionary