noun
a pair of levers hinged at the fulcrum
• Hypernyms: ↑lever
• Hyponyms: ↑nutcracker, ↑pliers, ↑pair of pliers, ↑plyers, ↑scissors, ↑pair of scissors
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noun : a system (as in various testing machines and weighing scales) of two or more levers arranged to transmit motion or force by linking an arm of each lever to an arm of the next lever in the train
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compound lever,
a combination of two or more levers used in large weighing and testing machines, usually to decrease the effort.
Useful english dictionary. 2012.