The removal of small secondary flakes along the edge of a lithic artifact to improve or alter the cutting properties of that edge Retouch flaking may be BIFACIAL or UNIFACIAL
If someone retouches something such as a picture or a photograph, they improve it, for example by painting over parts of it. He said the photographs had been retouched She retouched her make-up. to improve a picture or photograph by painting over marks or making other small changes airbrush