#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 grinder n. [molar] grinding tooth with a broad crown; located behind the premolars. wn
#3 grinder n. [mill, milling machinery] machinery that processes materials by grinding or crushing. wn
#4 grinder n. a machine tool that polishes metal. wn
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