thousandislands Can.-N.Y. resort area Group in upstate New York Salad-dressing source Resort straddling the U.S.-Canada border Group of about 1,500 in the St. Lawrence River Certain dressings Chain in the upper St. Lawrence River Summer resort area famous for recreational boating N.Y.–Can. area for boaters, anglers et al. Resort in New York and Canada Source of a salad dressing