Sheetmetalworld.com has compiled a comprehensive glossary for the sheet metal and general manufacturing market. If we're missing some terms please feel free to use the Contact form.
Another useful glossary is the CAD CAM and Nesting glossary.
Computer Aided Design. Software to design parts. Examples are AutoCAD, Solidworks, SolidEdge etc.
Customer Asset Management.
Computer Numeric Control. Refers to the computer integrated into a machine (such as a mill, router, laser etc) to receive and process instructions.