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stopcock

noun

stop·​cock ˈstäp-ˌkäk How to pronounce stopcock (audio)
: a cock for stopping or regulating flow (as through a pipe)

Example Sentences

a mechanical engineer who designs industrial valves and stopcocks
Recent Examples on the Web Levers, stopcocks, switches and buttons sent decisions back out. The Economist, 18 Dec. 2019

Word History

First Known Use

1584, in the meaning defined above

Time Traveler
The first known use of stopcock was in 1584

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