01 n. That which cuts off or shortens, as a nearer passage or road.
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1.
That which cuts off or shortens, as a nearer passage or road.
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2.
The valve gearing or mechanism by which steam is cut off from entering the cylinder of a steam engine after a definite point in a stroke, so as to allow the remainder of the stroke to be made by the expansive force of the steam already let in. See Expansion gear, under Expansion.(Mach.) See: Expansion