one of the islands of Holland, bounded by the river Maes, which divides it from the continent, and the island of Illemunde, on the north; by the sea called Bies bocht, on the east; by another branch of the Maes, which divides it from the islands of Gorée and Overflackee, on the south; and by the German sea on the west; being about 24 miles long, and five broad.