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penstock

American  
[pen-stok] / ˈpɛnˌstɒk /

noun

  1. a pipe conducting water from a head gate to a waterwheel.

  2. a conduit for conveying water to a power plant.

  3. a sluicelike contrivance used to control the flow of water.


penstock British  
/ ˈpɛnˌstɒk /

noun

  1. a conduit that supplies water to a hydroelectric power plant

  2. a channel bringing water from the head gates to a water wheel

  3. a sluice for controlling water flow

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

penstock Scientific  
/ pĕnstŏk′ /
  1. A sluice or gate used to control a flow of water.

  2. A pipe or conduit used to carry water to a water wheel or turbine.


Etymology

Origin of penstock

First recorded in 1600–10; pen 2 + stock

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Miss Penstock wiped her eyes over and over.

From Saxe Holm's Stories by Jackson, Helen Hunt

Down stairs, in the saddened empty study, sat little Miss Penstock, the village dressmaker, sewing on our gloomy black dresses.

From Saxe Holm's Stories by Jackson, Helen Hunt

Patrick is with him, his devoted servant, and Miss Penstock has gone to keep house for them.

From Saxe Holm's Stories by Jackson, Helen Hunt

Miss Penstock had always spoken with a certain sort of tender reverence to Nat, and I remembered that he liked to be in the room where she sewed.

From Saxe Holm's Stories by Jackson, Helen Hunt

Well, true to his hauty resolution to not share his grand success and triumph with anybody he went the next day and hired a man by the name of Penstock.

From Samantha at Coney Island and a Thousand Other Islands by Holley, Marietta