meat grinder

Noun meat grinder has 2 senses

• meat grinder(n = noun.artifact) - a mill for grinding meat;
is a kind of grinder, mill, milling machinery

• meat grinder(n = noun.act) - any action resulting in injury or destruction; "the meat grinder of politics destroyed his reputation"; "allied forces crumbled before the Wehrmacht meat grinder"
is a kind of aggression, hostility