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
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
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012