Fon Syllabification: (Fon)Pronunciation: /fän/Definition of Fon noun (plural same or Fons) 1a member of a people inhabiting the southern part of Benin. 2the Kwa language of the Fon. adjective relating to the Fon or their language. Origin:the name in FonFon in other Oxford dictionaries Definition of Fon in the British & World English dictionary