Retouch - the work done to an edge of a flint

Flint

Flint is a hard, sedimentary cryptocrystalline form of the mineral quartz, categorized as a variety of chert. It occurs chiefly as nodules and masses in sedimentary rocks, such as chalks and limestones. Inside the nodule, flint is usually dark grey, black, green, white, or brown in colour, and...

 implement in order to make it into a functional tool, or to reshape a used tool. In the case of a core-tool, such as a hand-axe, retouch may simply consist of roughly trimming the edge by striking with a hammerstone

Hammerstone

In archaeology, a hammerstone is a hard cobble used to strike off lithic flakes from a lump of tool stone during the process of lithic reduction. The hammerstone is a rather universal stone tool which appeared early in most regions of the world including Europe, India and North America...

, but on smaller, finer flake

Flake

Flake or Flakes may refer to:In food preparation:* Fish flake, a platform for drying cod* Flake , an Australian term for edible flesh of one of several species of shark...

 or blade

Blade

A blade is that portion of a tool, weapon, or machine with a cutting edge and/or a pointed tip that is designed to cut and/or puncture, stab, slash, chop, slice, thrust, or scrape animate or inanimate surfaces or materials...

 tools it is sometimes carried out by pressure flaking. Retouch, also known as secondary working, is one of the most obvious features distinguishing a tool from a waste by-product of lithic manufacture (debitage

Debitage

The term debitage refers to all the waste material produced during lithic reduction and the production of chipped stone tools. This assemblage includes, but is not limited to, different kinds of lithic flakes, shatter, and production errors and rejects....

).