[1] : WordNet (r) 2.0

cutting edge
     n 1: the position of greatest advancement; the leading position
          in any movement or field syn: vanguard, forefront
     2: the sharp cutting side of the blade of a knife syn: knife
        edge
see also:
vanguard forefront knife edge 

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

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

Cutting >> C Words
Cutting, definition of term: Cutting
cutting_pag1.html