A nation or state. The territory of a nation or state; land. The people of a nation or state; populace: The whole country will profit from the new economic reforms. The land of a person's birth or citizenship: Foreign travel is restricted in his country. A region, territory, or large tract of land distinguishable by features of topography, biology, or culture: hill country; Bible country. An area or expanse outside cities and towns; a rural area: a vacation in the country. Law A jury. Informal Country music. Of, relating to, or typical of the country: a country road; country cooking. Of or relating to country music. in country In Vietnam during the period of U.S. military operations there: "He'd been in country a month longer than the other four\u201d ( Nelson DeMille).