n. The sharp margin or thin bordering or terminal line of a cutting instrument: as, the edge of a razor, knife, sword, ax, or chisel.n. The extreme border or margin of anything; the verge; the brink: as, the edge of a table; the edge of precipice.n. Specifically— In mathematics, a line, straight or curved, along which a surface is broken, so that every section of the surface through that line has a cusp or an abrupt change of direction at the point of intersection with it.n. In zoology, the extreme boundary of a surface, part, or mark, generally distinguished as posterior, anterior, lateral, superior, etc. In entomology it is often distinguished from the margin, which is properly an imaginary space surrounding the disk of any surface, and limited by the edge. The outer edge of the elytron of a beetle may be either the extreme boundary of the elytron, or the lateral boundary of the upper surface, separated from the true boundary by a deflexed margin called the epipleura.n. The border or part adjacent to a line of division; the part nearest some limit; an initial or terminal limit; rim; skirt: as, the edge of the evening; the outer and inner edges of a field; the horizon's edge.n. The side of a hill; a ridge. Halliwell.n. Sharpness; acrimony; cutting or wounding quality.n. Acuteness or sharpness, as of desire or of appetite; keenness; eagerness; fitness for action or operation.n. To make eager or intense; sharpen; stimulat: as, his curiosity or expectation was set on edge.n. Synonyms and Verge, skirt, brim. See rim. Intensity.To sharpen; put an edge upon; impart a cutting quality to.Hence, figuratively, to sharpen; pique.To furnish with an edge, fringe, or border: as, to edge a flower-bed with box.To move by or as if by dragging or hitching along edgewise; impel or push on edge, and hence slowly or with difficulty: as, to edge a barrel or a box across the sidewalk; to edge one's self or one's way through a crowd.To incite; instigate; urge on; egg. See egg.To move sidewise; move gradually, cautiously, or so as not to attract notice: as, edge along this way.n. In poker, same as (and a substitution for) age, 13.