penstock, pen′stok, n. a trough conveying water to a water-wheel.
And that's where you will go back and back and back, as you said about building the penstock?
Outside should be a penstock, to carry off the superfluous water.
It is from this flume that the penstock draws water for the wheel.
We construct a penstock p and install a water-wheel, S, to operate a mill.
This is a type of wheel mounted on the lower end of a vertical or horizontal shaft, within, or at the bottom, of a penstock.
Each turbine in a penstock represents the power of 5,000 horses, and there are now ten or more employed.
Adjoining the engine-well are the grating tank and penstock chamber, and with these the principal main sewer communicates.
But the guest grabbed the penstock while it was still vibrating.
At the gate is placed a vertical iron tube called a penstock, 7½ feet in diameter and 160 feet deep.