Definition
A *biface* is a type of prehistoric stone tool that has been worked on both sides or faces. Think of it as a stone-age multi-tool, with sharpened edges for various tasks. Unlike a tool worked on only one side, it's more versatile. Imagine it like a stone axe or hand-axe. It was commonly used by early humans for cutting, scraping, and digging. Bifaces provide insights into early human technology and toolmaking skills.