edge

1a : the cutting side of a blade a razor's edge

b : the sharpness of a blade a knife with no edge

c(1) : force, effectiveness blunted the edge of the legislation

(2) : vigor or energy especially of body maintains his hard edge

d(1) : incisive or penetrating quality writing with a satirical edge

(2) : a noticeably harsh or sharp quality her voice had an edge to it

(3) : a secondary but distinct quality rock music with a bluesy edge

e : keenness or intensity of desire or enjoyment lost my competitive edge

2a : the line where an object or area begins or ends : border on the edge of a plain

b : the narrow part adjacent to a border the edge of the deck

c(1) : a point near the beginning or the end especially : brink, verge on the edge of disaster

(2) : the threshold of danger or ruin living on the edge

d : a favorable margin : advantage has an edge on the competition

3 : a line or line segment that is the intersection of two plane faces (as of a pyramid) or of two planes

Definition of edge