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English definition of “lever”

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lever

noun [C]  /ˈlev·ər, ˈli·vər/ us  
a handle that you move to control the operation of a machine: He pushed the lever into the "on" position and started the machine. physics A lever is also a bar, moving over a fixed point, that when pressed down at one end can move or lift something at the other end.
(Definition of lever from the Cambridge Academic Content Dictionary © Cambridge University Press)
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