Flemish /ˈflɛmɪʃ/ adjective3 •Of or relating to Flanders, either as the historical county of Flanders (the current provinces of West Flanders and East Flanders in Belgium, Zeelandic Flanders in the Netherlands and French Flanders); or as the Dutch-speaking region of Belgium. •Of or relating to the Belgian standard variety of the Dutch language. •Of or relating to West Flemish, East Flemish and/or French Flemish dialects of Dutch. formsflemishes · more Flemish · most Flemish