There was an old mill that really did grind corn.

有一个真正碾磨玉米的老磨坊。

《柯林斯英汉双解大词典》

The miller ground winter corn and summer rice are on the same mill stones used by his grandfather and great-grandfather.

磨坊主人用上两代留下的石磨，研磨冬季玉米和夏季稻米。

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Out of the little mill came wood for the fire, oil for lighting and cooking, clothes, corn, and many other good things.

从小磨里出来了烤火用的柴禾，点灯和做饭菜用的油，还有衣服，粮食和其他很多东西。

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As well as the more well known mills using water wheels, such as the one that stands as an ornamental feature at Llangollen restaurant, the Corn Mill, and the historic Rossett Mill, there are clues that water power has been harnessed elsewhere.

BBC: Rossett Mill is an historic landmark in the town

It was used by packhorses transporting produce such as corn from Fingle Mill, and wood products.

BBC: Devon's rivers: The River Teign

For example, when you nixtamalize corn to make tortillas, the traditional recipe is to boil the corn with limestone, let it sit overnight outside, then grind it at the mill.

WSJ: Mexico's Culinary Genius | Soapbox