Over or across the country.Passing by land; made or performed upon or across the land: as, an overland journey.Especially— The route from Great Britain to India by way of the Isthmus of Suez, as opposed to that around the Cape of Good Hope.The route from the country east of the Mississippi to the Pacific coast across the plains and the Rocky Mountains, as opposed to that around Cape Horn, or by way of the Isthmus of Darien.In Australia, to cross the country with herds of cattle, sheep, etc.