boundary, edge, bound -- (a line determining the limits of an area)
edge -- (a sharp side formed by the intersection of two surfaces of an object; "he rounded the edges of the box")
edge, sharpness -- (the attribute of urgency in tone of voice; "his voice had an edge to it")
edge -- (a slight competitive advantage; "he had an edge on the competition")
edge -- (the outside limit of an object or area or surface; a place farthest away from the center of something; "the edge of the leaf is wavy"; "she sat on the edge of the bed"; "the water's edge")
Overview of verb edge
The verb edge has 4 senses
edge, inch -- (advance slowly, as if by inches; "He edged towards the car")
border, edge -- (provide with a border or edge; "edge the tablecloth with embroidery")