Noun
A device for cutting meat into very small pieces.
Keep your fingers away from the throat of the meatgrinder.
(informal) An activity with a high casualty or attrition rate, such as a military battle or an occupational or athletic activity.
The mountainous second day of the race was a real meatgrinder, with 20% of racers dropping out.
(informal) A process that is likely to be injurious in a non-physical way.
Senate confirmation hearings are a real meatgrinder, discouraging people from government service.
This formed the basis of what came to be known as the "meatgrinder". Source: Internet
Thus, Brecht and Weill tried to display capitalism as the meatgrinder they believed it to be. Source: Internet