Kerouac, Jack Syllabification: (Ker·ou·ac, Jack)Pronunciation: /ˈkero͞oˌak/Definition of Kerouac, Jack (1922–69), US novelist and poet; born Jean-Louis Lebris de Kérouac. A leading figure of the beat generation, he is best known for his semiautobiographical novel On the Road (1957). Other notable works: Doctor Sax (1959) and Big Sur (1962). Kerouac, Jack in other Oxford dictionaries Definition of Kerouac, Jack in the British & World English dictionary