[1] : The Collaborative International Dictionary of English v.0.48

edge \edge\ e^j, n. oe. eg, egge, as. ecg; akin to ohg.
   ekka, g. ecke, icel.  sw. egg, dan. eg, and to l. acies, gr.
   'akh` point, skr. a,cri edge. root1. cf. egg, v. t.,
   eager, ear spike of corn, acute.
   1. the thin cutting side of the blade of an instrument; as,
      the edge of an ax, knife, sword, or scythe. hence,
      figuratively, that which cuts as an edge does, or wounds
      deeply, etc.
      1913 webster

            he which hath the sharp sword with two edges. --rev.
                                                  ii. 12.
      1913 webster

            slander,
            whose edge is sharper than the sword. --shak.
      1913 webster

   2. any sharp terminating border; a margin; a brink; extreme
      verge; as, the edge of a table, a precipice.
      1913 webster

            upon the edge of yonder coppice.      --shak.
      1913 webster

            in worst extremes, and on the perilous edge
            of battle.                            --milton.
      1913 webster

            pursue even to the very edge of destruction. --sir
                                                  w. scott.
      1913 webster

   3. sharpness; readiness or fitness to cut; keenness;
      intenseness of desire.
      1913 webster

            the full edge of our indignation.     --sir w.
                                                  scott.
      1913 webster

            death and persecution lose all the ill that they can
            have, if we do not set an edge upon them by our
            fears and by our vices.               --jer. taylor.
      1913 webster

   4. the border or part adjacent to the line of division; the
      beginning or early part; as, in the edge of evening. "on
      the edge of winter." --milton.
      1913 webster

   edge joint carp., a joint formed by two edges making a
      corner.

   edge mill, a crushing or grinding mill in which stones roll
      around on their edges, on a level circular bed; -- used
      for ore, and as an oil mill. called also chilian mill.
      

   edge molding arch., a molding whose section is made up of
      two curves meeting in an angle.

   edge plane.
      a carp. a plane for edging boards.
      b shoemaking a plane for edging soles.

   edge play, a kind of swordplay in which backswords or
      cutlasses are used, and the edge, rather than the point,
      is employed.

   edge rail. railroad
      a a rail set on edge; -- applied to a rail of more depth
          than width.
      b a guard rail by the side of the main rail at a switch.
          --knight.

   edge railway, a railway having the rails set on edge.

   edge stone, a curbstone.

   edge tool.
      a any tool or instrument having a sharp edge intended
          for cutting.
      b a tool for forming or dressing an edge; an edging
          tool.

   to be on edge,
      a to be eager, impatient, or anxious.
      b to be irritable or nervous.

   on edge,
      a see to be on edge.
      b see to set the teeth on edge.

   to set the teeth on edge,
      a to cause a disagreeable tingling sensation in the
          teeth, as by bringing acids into contact with them.
          archaic --bacon.
      b to produce a disagreeable or unpleasant sensation; to
          annoy or repel; -- often used of sounds; as, the
          screeching of of the subway train wheels sets my teeth
          on edge.
          1913 webster +pjc
see also:
egg eager ear acute edge joint edge mill 
chilian mill edge molding edge plane edge play edge rail 
edge railway edge stone edge tool to be on edge on edge 
to be on edge to set the teeth on edge to set the teeth on edge 

Edge >> E Words
Edge, definition of term: Edge
edge_pag1.html

Cutting Edge >> C Words
Cutting Edge, definition of term: Cutting Edge
cutting+edge_pag1.html