any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks | a club-shaped hand tool for grinding and mixing substances in a mortar |
a motor vehicle with four wheels; usually propelled by an internal combustion engine | 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 |
a device for overcoming resistance at one point by applying force at some other point | machine consisting of a heavy bar that moves vertically for pounding or crushing ores |
a group that controls the activities of a political party | |
an intricate organization that accomplishes its goals efficiently | |
an efficient person | |