WALCHEREN, an island of the Low Countries, and one of the principal of those of Zealand; being separated from the islands of North and South Beveland by a narrow channel, and from Dutch Flanders by the mouth of the Scheld. It is about nine miles in length, and eight in breadth; and though it lies low, has good arable and pasture land. The chief town of this island and the whole province is Middleburg.