grinder

noun

1. 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

   noun.food

   Synonyms bomber cuban sandwich hero hero sandwich hoagie hoagy italian sandwich poor boy sub submarine submarine sandwich torpedo wedge zep

   Source: WordNet 3.0

2. grinding tooth with a broad crown; located behind the premolars

   noun.body

   Synonyms molar

   Source: WordNet 3.0

3. machinery that processes materials by grinding or crushing

   noun.artifact

   Synonyms mill milling machinery

   Source: WordNet 3.0

4. a machine tool that polishes metal

   noun.artifact

   Source: WordNet 3.0

5. One who, or that which, grinds.

   noun

   Source: webster1913