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Meaning of penstock

pen•stock

Pronunciation: (pen'stok"), [key]
— n.
  1. a pipe conducting water from a head gate to a waterwheel.
  2. a conduit for conveying water to a power plant. See diag. under.
  3. a sluicelike contrivance used to control the flow of water.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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