polder: low-lying land that has been reclaimed and is protected by dikes (especially in the Netherlands)
land: material in the top layer of the surface of the earth in which plants can grow (especially with reference to its quality or use)
reye's syndrome: acquired encephalopathy following acute viral infections (especially influenza or chicken pox) in young children; characterized by fever, vomiting, disorientation, coma, and fatty infiltration of the liver