Edge  —n. 1 boundary-line or margin of an area or surface. 2 narrow surface of a thin object. 3 meeting-line of surfaces. 4 a sharpened side of a blade. B sharpness. 5 brink of a precipice. 6 edge-like thing, esp. The crest of a ridge. 7 effectiveness, incisiveness; excitement. —v. (-ging) 1 advance, esp. Gradually or furtively. 2 a provide with an edge or border. B form a border to. 3 sharpen (a tool etc.).  have the edge on (or over) have a slight advantage over. On edge tense and irritable. Set a person's teeth on edge (of taste or sound) cause an unpleasant nervous sensation. Take the edge off make less intense. [old english]