overground adjective 2noun 1forms 1 adjective2 •Above the ground.We have been concentrating on the City because that was the initial target for builders of both overground and underground railways, who were like artists going over and over the same piece of canvas. — 2012 •Mainstream, not underground.They have plans to carry overground books on gay liberation, and a lot of books from small presses. — 1974 noun1 •A commuter rail or similar rail transport system, or a train in such systems, generally running through an urban area largely above ground and faster than an underground or metro with fewer stops.The overground is ten minutes walk through the gloom. Anna finds a seat in the third carriage she tries. — 2013 formsovergrounds
