- on or above the surface of the groundan overground railway
- having become sufficiently established, known, or accepted so as to no longer be considered avante-garde, experimental, or subversive
Examples from the Web for overground
But among the factory and office workers is a commuter photographed on the London Overground.Why is This London Commuter in an Obama Ad?
February 5, 2014
Word Origin and History for overground
Online Etymology Dictionary, © 2010 Douglas Harper