The term 'SIX-SIDED ROLLER' can be summarized as a device with six sides that is used to roll something. The crossword solution for this term is 'DIE', which is a tool used in manufacturing and engineering to cut or shape material. It is typically cylindrical in shape and has multiple sides, usually four, six, eight, or twelve. A six-sided roller is a type of DIE that is used to roll material into a specific shape.