Английский Этимологический словарь - mill (1)

- "grinding machine," O.E. mylen "mill," an early borrowing from L.L. molina, molinum "mill," originally fem. and neut. of molinus "pertaining to a mill," from L. mola "mill, millstone," related to molere "to grind," from PIE *mel-/*mol-/*ml- "grind." "Grinding grain" was the original sense; other types of manufacturing places began to be called mills early 15c.