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millstone

A buhrstone; e.g., a coarse-grained sandstone or a fine-grained quartz conglomerate. Also, one of two thick disks of such material used for grinding grain and other materials fed through a center hole in the upper stone. Quarried underground in Virginia; also, produced in New York and (of granite) in North Carolina.

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  • ed.young
  • (Milwaukee, United States)

  •  (V.I.P) 21084 分数
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