To export something is to move it from its current location to a different territory. Some have been trying to export the American diet overseas by spreading McDonald's fries around the globe.
The verb export comes from the Latin word exportare which means “to carry out” or “send away.” To export something is to move it across borders. You could export locally made fabric to wealthy European cities. When something is an export, it is a good, service or idea that is sent or sold to a foreign land: diamonds are a valuable African export.