LEON, a province of Spain, with the title of a kingdom; bounded on the north by Asturias; on the west by Galicia and Portugal; and on the south by Estremadura and Castile, which also bounds it on the east. It is about 125 miles in length, and 100 in breadth; and is divided into two almost equal parts by the river Duero, or Douro. It produces all the necessaries of life, and Leon is the capital town.