English

Noun

roller mill ‎(plural roller mills)

1. Historically: a simple mill, often powered by animals, which grinds a material (grain, olives, chalk, etc) between a stationary horizontal stone disk and two vertical stone cylinders, in order to prduce flour, olive oil, etc.
2. An industrial mill, usually electrically or steam powered, which mills a material (grain, pigment, etc) between a series of rollers (often ribbed and usually operating at different speeds), to produce flour, etc.

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