1. 研磨机，碾磨机（厨用电器）
In a kitchen, a grinder is a device for crushing food such as coffee or meat into small pieces or into a powder.

2. 磨床；砂轮
A grinder is a machine or tool for sharpening, smoothing, or polishing the surface of something.

1. a machine tool that polishes metal

2. machinery that processes materials by grinding or crushing

Synonym: millmilling machinery

3. grinding tooth with a broad crown
located behind the premolars

Synonym: molar

4. 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

Synonym: bomberherohero sandwichhoagiehoagyCuban sandwichItalian sandwichpoor boysubsubmarinesubmarine sandwichtorpedowedgezep