Pug mill, a kind of mill for grinding and mixing clay, either for
brickmaking or the fine arts; a clay mill. It consists essentially of
an upright shaft armed with projecting knives, which is caused to
revolve in a hollow cylinder, tub, or vat, in which the clay is placed.
Pug, n. [Corrupted fr. puck. See Puck.] 1. An elf, or a hobgoblin; also
same as Puck. [Obs.] B. Jonson.