A thin, sharpened side, as of the blade of a cutting instrument, To make eager or intense; sharpen; stimulat_ as, his curiosity or expectation was set on edge, Acuteness or sharpness, as of desire or of appetite; keenness; eagerness; fitness for action or operation, intransitive verb_ To give an edge to (a blade); sharpen, To put a border or edge on, To trim or shape the edge of