La Fontaine, Jean de Syllabification: (La Fon·taine, Jean de)Pronunciation: /lä fänˈtān, fônˈten/Definition of La Fontaine, Jean de (1621–95), French poet. He is chiefly known for Fables (1668–94), drawn from oriental, classical, and contemporary sources. La Fontaine, Jean de in other Oxford dictionaries Definition of La Fontaine, Jean de in the British & World English dictionary