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

Similar word(s): bomber, hero, hoagie, hoagy, sub, submarine, torpedo, wedge, zep

Definition categories: food, sandwich

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

Similar word(s): molar

Definition categories: body, tooth

3. machinery that processes materials by grinding or crushing

Similar word(s): mill

Definition categories: man–made, machinery

4. a machine tool that polishes metal

Definition categories: man–made