a stone tool formed by chipping the end of a flake of stone which can then be used to scrape animal hides and wood. Its steeply angled (acute) working edge was used for flensing or softening hides and to dress skins. It appeared in Europe during the Upper Paleolithic period. It differed from side scrapers in that it had a rounded retouched end and was often made on a blade. A side scraper had a retouched working edge along the long edge of the flake.