RhymeZone: meatgrinder definitions

Definitions of meatgrinder:

noun: A device for cutting meat into very small pieces.
noun: (informal) An activity with a high casualty or attrition rate, such as a military battle or an occupational or athletic activity.
noun: (informal) A process that is likely to be injurious in a non-physical way.

(Definitions from Wiktionary)