Edge
Part of speech: noun
Definition: The boundary line of a surface. The joining line between two vertices of a polygon. The place where two faces of a polyhedron meet. An advantage (as have the edge on) The thin cutting side of the blade of an instrument; as, the edge of an ax, knife, sword, or scythe. Hence, figuratively, that which cuts as an edge does, or wounds deeply, etc. Any sharp terminating border; a margin; a brink; extreme verge; as, the edge of a table, a precipice. Sharpness; readiness or fitness to cut; keenness; intenseness of desire. The border or part adjacent to the line of division; the beginning or early part; as, in the edge of evening. "On the edge of winter." John Milton. The edge of a cricket bat. Any of the connected pairs of vertices in a graph. In male masturbation, a level of sexual arousal that is maintained just short of reaching the point of inevitability, or climax.
Part of speech: verb
Definition: To move an object slowly and carefully in a particular direction. To move slowly and carefully in a particular direction. (cricket) To hit the ball with an edge of the bat, causing a fine deflection. Triming the margin of a lawn where the grass meets the sidewalk, usually with an electric or gas-powered lawn edger.
Sharpness
Part of speech: noun
Definition: the cutting ability of an edge; keennessthe fineness of the point a pointed objectThe product or result of being sharp.pungency or aciditydistinctness, focusacuteness or acuity
Example sentence: The glory of 70mm is the sharpness of the image it offers.