popcorn (ˈpɒpˌkɔːn) n 1.(Plants) a variety of maize having hard pointed kernels that puff up when heated 2.(Cookery) the puffed edible kernels of this plant [C19: so called because of the noise the grains make when they swell up and burst on heating] ...
Grains are loaded into the gap between the millstones, where they are compressed and subjected to friction, which frees the kernels from the shells. The intensity of hulling depends mainly on the clearance between the millstones, which is regulated by a special lifting device. Hulling mills ...