stop·​cock | \ ˈstäp-ˌkäk How to pronounce stopcock (audio) \

Definition of stopcock

: a cock for stopping or regulating flow (as through a pipe)

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Examples of stopcock in a Sentence

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, "Can technology plan economies and destroy democracy?," 18 Dec. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'stopcock.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of stopcock

1584, in the meaning defined above

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Time Traveler for stopcock

Time Traveler

The first known use of stopcock was in 1584

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Cite this Entry

“Stopcock.” Dictionary, Merriam-Webster, Accessed 10 Apr. 2021.

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English Language Learners Definition of stopcock

: a device used for controlling or stopping the flow of a liquid or gas through a pipe

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