A machine for trimming lawn edges. This could either have separate blades, as in the Ransomes edger, or a disc coulter. This could also be part of a Trimmer mower.
Found on http://www.encyclo.co.uk/local/20619
An edger (also known as a lawn edger or stick edger) is a garden tool used to cleanly separate a lawn from a walkway or other paved surface, such as a concrete sidewalk or asphalt path. Edgers may be manual or automated, typically employing a small two-stroke gasoline motor or an electric motor. An edger enables a user to create a clear separation Found on http://en.wikipedia.org/wiki/Edger