Definitions:
the outside limit of an object, area, or surface

the sharpened side of the blade of a cutting implement or weapon

a quality or factor which gives superiority over close rivals

provide with a border or edge

move or cause to move gradually or furtively in a particular direction

give an intense or sharp quality to

strike (the ball) with the edge of the bat; strike a ball delivered by (the bowler) with the edge of the bat

ski with one's weight on the edges of one's skis