- any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks
- an efficient person;
"the boxer was a magnificent fighting machine"
- an intricate organization that accomplishes its goals efficiently;
"the war machine"
- a device for overcoming resistance at one point by applying force at some other point
- a group that controls the activities of a political party;
"he was endorsed by the Democratic machine"
- a motor vehicle with four wheels; usually propelled by an internal combustion engine;
"he needs a car to get to work"