The excess amount of something that cannot be contained within its usual limits. The overspill from the river caused flooding in the nearby fields.
A population that exceeds the capacity of an area, often leading to relocation. The city's overspill was directed to newly developed suburban areas.
The act of something spilling over or flowing out of its container. The overspill of paint from the can made a mess on the floor.
A suburban settlement or housing area built to accommodate people relocated from an overcrowded city. They moved to an overspill on the outskirts of Birmingham in the 1970s.