What is "zeelandic"

Zeelandic ( in Zeelandic, Zeeuws in Dutch) is a regional language spoken in the Dutch province of Zeeland and on the South Holland island of Goeree-Overflakkee. Commonly considered a Dutch dialect, it has notable differences mainly in pronunciation but also in grammar and vocabulary, which sets it clearly apart from Standard Dutch and makes comprehension by unskilled Dutch speakers difficult. Linguistically it is a dialect of West Flemish.