A machine that tools or polishes metal.
One of the large teeth found toward the back of the mammalian mouth. The structure of the jaw, and the relation of the muscles, allows a massive force to be applied to molars. In herbivores the molars are flat with sharp ridges of enamel and are used for grinding, an adaptation to a diet of tough plant material. Carnivores have sharp powerful molars called carnassials, which are adapted for cutting meat.
Grinding tooth with a broad crown; located behind the premolars; SYN. grinder.