grinding gear
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[edit]![](http://upload.wikimedia.org/wikipedia/commons/thumb/a/a8/Disposable_salt_mill%2C_computed_tomogram_%284%29.jpg/220px-Disposable_salt_mill%2C_computed_tomogram_%284%29.jpg)
Noun
[edit]grinding gear (plural grinding gears)
- (engineering) functional unit of an apparatus that breaks solid materials into smaller pieces
grinding gear (plural grinding gears)