grinder

Noun

• a machine tool that polishes metal

• machinery that processes materials by grinding or crushing

• grinding tooth with a broad crown; located behind the premolars

• a large sandwich made of a long crusty roll split lengthwise and filled with meats and cheese (and tomato and onion and lettuce and condiments); different names are used in different sections of the United States

Related words

• Synonyms: 
  mill , milling machinery , molar