'cutting edge' definitions:
Definition of 'cutting edge'
(from WordNet)
noun
The position of greatest importance or advancement; the leading position in any movement or field; "the Cotswolds were once at the forefront of woollen manufacturing in England"; "the idea of motion was always to the forefront of his mind and central to his philosophy" [syn: vanguard, forefront, cutting edge]
noun
The sharp cutting side of the blade of a knife [syn: knife edge, cutting edge]