edge

1. The boundary line of a surface.
2. A one-dimensional face of a polytope. In particular, the joining line between two vertices of a polygon; the place where two faces of a polyhedron meet.
3. An advantage. · I have the edge on him.
4. The thin cutting side of the blade of an instrument, such as an ax, knife, sword, or scythe; that which cuts as an edge does, or wounds deeply, etc. (figuratively) · Speaking with a metallic edge to her voice.· There was an unmistakable edge to her remarks.
5. A sharp terminating border; a margin; a brink; an extreme verge. · The cup is right on the edge of the table.· He is standing on the edge of a precipice.
6. Sharpness; readiness or fitness to cut; keenness; intenseness of desire. · After the timeout there was a new edge to the team's play.
7. The border or part adjacent to the line of division; the beginning or early part (of a period of time) · in the edge of evening
8. A shot where the ball comes off the edge of the bat, often unintentionally.

الجمع edges