any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks | a car that is old and unreliable |
a motor vehicle with four wheels; usually propelled by an internal combustion engine | a collection of objects laid on top of each other |
a device for overcoming resistance at one point by applying force at some other point | (often followed by `of') a large number or amount or extent |
a group that controls the activities of a political party | |
an intricate organization that accomplishes its goals efficiently | |
an efficient person | |