An airtight glass bulb containing a partial vacuum and a set of vanes, mounted on a spindle, which rotate when exposed to light, providing a quantitative measurement of electromagnetic radiation intensity.

plural of light mill

plural of jar mill

An establishment where metal plates are cut into strips for making nails. / A rotating disc used by gem-cutters for slitting. / A gangsaw for resawing lumber for blind-slats, fence pickets, etc.

plural of slitting mill

plural of rolling mill

A mill or factory in which animal feed is manufactured

(cooking) A utensil for mashing and sieving soft foods, typically consisting of a bowl, a bottom plate with holes like those in a colander, and a crank fitted with a bent metal blade which crushes the food and forces it through the holes in the plate.

plural of food mill

A mill at which coffee beans are dried, roasted, and ground prior to sale. / A device designed for grinding coffee beans.