[ noun ] machine consisting of a heavy bar that moves vertically for pounding or crushing ores

[ verb ] (food) grind or pulverize in a pestle

[ noun ] (geography) a heavy tool of stone or iron (usually with a flat base and a handle) that is used to grind and mix material (as grain or drugs or pigments) against a slab of stone

[ noun ] a club-shaped hand tool for grinding and mixing substances in a mortar