Wiktionary
debitage
n. (context archaeology English) The sharp-edged waste material left over when someone creates a stone tool.
Wikipedia
Debitage
Debitage is all the material produced during the process of lithic reduction and the production of chipped stone tools. This assemblage includes, but is not limited to, different kinds of lithic flakes and lithic blades, shatter and production debris, and production rejects.
Usage examples of "debitage".
Then he looked around and saw that the debitage of chips and flakes, left behind in the process of making knives, spear points, scrapers, the chisel-like tools called burins, and other weapons and tools out of the hard siliceous stone, was all over.