edge
Definition
The outer limit or border of an object, surface, or area; a sharp or thin boundary.
A competitive advantage or superiority in a situation.
The line where two surfaces meet at an angle, often sharpened on a cutting tool.
A tense mental state, as in 'on edge,' meaning nervous or irritable.
To move gradually or cautiously in a specified direction.
Examples
She sharpened her wit to give her the edge in the trivia night showdown, leaving everyone else edged out.
The squirrel edged along the power line, living on the edge between bravery and instant barbecue.
After binge-watching thrillers, he was on edge, jumping at shadows that turned out to be just his cat plotting world domination.
The entrepreneur edged out the competition by adding a quirky flavor to her product line—literally, with spicy pickles.