What is another word for "edge"?

Roget's Thesaurus (1911) lists these synonyms for "edge": about, abrasion, acerb, acescent, acetic, acetose, acetous, acid, acidify, acidity, acidulate, acidulous, affriction, all, alum, ambient, and, anointment, around, arrosion, atmosphere, attrite, attrition, banlieue, begird, belt, beset, bluff, blunt, bluntness, border, brim, brink, brow, chaps, chops, circumambient, circumference, circumferential, circumfluent.