#manufacturing term

• Notch — A notch, deep indent, profiled groove, or small slot intentionally made on the surface of a mechanical part, instrument, or structural material. Its functional role is to allow guiding, locking, correct assembly with another component, or to serve as a controlled failure point in materials resistance testing.
• Machined — Having undergone the process of machining or chipping; a solid material shaped, cut, or finished by the successive removal of thin layers in the form of chips. As a neuter noun, it indicates the technical operation itself performed on machine tools. It describes the structural state of a part whose final dimensions and geometric precisions were obtained via a cutting tool.
• Machinist — Performing or serving for cutting; a tool, device, or machine tool structurally designed to remove machining allowance from a part in the form of chips. As a masculine noun, it designates the skilled worker (turner, miller, planer operator) who operates these cutting industrial machines to shape metal or wood.