A (mechanical) device to perform a certain task.
Something overly artful or artificial.
A means, such as an elaborate plan or strategy, to accomplish a certain objective.
Any combination of cams, gears, links, belts, chains and logical mechanical elements.
Any process of, or system designed to manage useful energy conversion.
A mental, physical, or chemical process.
The theory that all natural phenomena can be explained by physical causes.
Any mechanical means for the conversion or control of motion, or the transmission or control of power.
A group of entities, such as objects, that interact together.