definition of
grinder

[1] #1 grinder n. [bomber, hero, hero sandwich, hoagie, hoagy, Cuban sandwich, Italian sandwich, poor boy, sub, submarine, submarine sandwich, torpedo, wedge, zep] 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. wn

[2] #2 grinder n. [molar] grinding tooth with a broad crown; located behind the premolars. wn

[3] #3 grinder n. [mill, milling machinery] machinery that processes materials by grinding or crushing. wn

[4] #4 grinder n. a machine tool that polishes metal. wn