logbook Pronunciation: /ˈlɔːɡbʊk; ˈlɒɡbʊk/Translate logbook | into Italian Spanish translation of logbookn (register) diario (m); [Naut] diario (m) de navegación or de a bordo; [Aviat] diario (m) de vuelologbook in other Oxford dictionaries Definition of logbook in the British & World English dictionary Definition of logbook in the US English dictionary