HyperDicEnglishPERP ... perpetual motion machine

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Related WikiPedia: perpetual motion machine
English 1 sense of the expression perpetual motion machine:
NOUNartifactperpetual motion machinea machine that can continue to do work indefinitely without drawing energy from some external source
Englishperpetual motion machine: 1 sense noun 1, artifact
MeaningA machine that can continue to do work indefinitely without drawing energy from some external source; impossible under the law of conservation of energy.
BroadermachineAny mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks

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