The term CROP MACHINE can be summarized as a REAPER, which is a six-letter word. A REAPER is a farm implement or machine used for harvesting grain crops such as wheat, oats, barley, and rye. It is usually pulled by a tractor or other vehicle and consists of a cutting bar that cuts the crop and a mechanism to gather the cut crop and deposit it into a wagon or other container. The REAPER has been in use since the 19th century and has been an important tool in modern farming.