the outside limit of an object or area or surface; a place farthest away from the center of something(noun.artifact)
Example: The edge of the leaf is wavy.
She sat on the edge of the bed.
The water's edge.
source: wordnet30
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.(noun)