Definition of "mill-power" []

• A unit of water-power the value of which varies in different localities. For example, at Holyoke, Massachusetts, it is equivalent to 38 cubic feet of water per second discharging under a head of 20 feet; at Minneapolis, Minnesota, it is equivalent to 30 cubic feet of water per second discharging under a head of 22 feet. (noun)

The Century Dictionary (Public Domain)

• "Treasury -- Mr. Lister's Account of the mill-power in parts of"
• "It was found that the combined available mill-power of Deptford, Portsmouth, and"
• "As to the mill-power at Limerick, it was so uncertain, so dependant on the weather, and so very much required there by the merchants, that he would make no demand upon it."