Petcock meaning

pĕtkŏk
A small valve or faucet used to drain or reduce pressure, as from a boiler.
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A small faucet or valve used in draining unwanted or excess water or air from pipes, radiators, boilers, etc.
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A small valve, spout, or faucet operated by hand, usually used to release pressure or drain fluid. [from 19th c.]
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Origin of petcock

  • Perhaps pet cock

    From American Heritage Dictionary of the English Language, 5th Edition

  • Apparently from pet +"Ž cock, because of its size.

    From Wiktionary