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penstock definition

pen·stock (pen′stäk′)

noun

  1. a gate or sluice used in controlling the flow of water
  2. ☆ a tube or trough for carrying water to a water wheel

Etymology: pen + stock

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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