Senegal (French: le Sénégal), officially the Republic of Senegal (French: République du Sénégal), is a country in West Africa. Senegal's economical and political capital is Dakar. It is the westernmost country in the mainland of the Old World, or Eurafrasia, and owes its name to the Sénégal River, which borders it to the east and north. The name "Senegal" comes from the Wolof "Sunuu Gaal," which means "Our Boat." Senegal covers a land area of almost 197,000 square kilometres (76,000 sq mi) and has an estimated population of about 13 million. The climate is Sahelian, but there is a rainy season.