A grinding machine, also known as a MILL or LATHE, is a tool used to shape and finish materials such as metal and wood. It consists of a rotating abrasive wheel that removes material from the workpiece, usually by means of shear deformation. The two crossword solutions for the term grinding machine are 'MILL' and 'LATHE', both of which refer to the same type of machine. MILL is a four-letter word and LATHE is a five-letter word.