Dictionary

penstock

noun pen·stock \ˈpen-ˌstäk\

Definition of PENSTOCK

1
:  a sluice or gate for regulating a flow (as of water)
2
:  a conduit or pipe for conducting water

Examples of PENSTOCK

  1. <a penstock carried water for the waterwheel>

First Known Use of PENSTOCK

circa 1607

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May 30, 2015
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