from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A valve that regulates the flow of fluid through a pipe; a faucet.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A valve, tap or faucet which regulates the flow of liquid or gas through a pipe.
  • n. A main shutoff for water to a home from a municipal supply. Usually these valves exist in pairs, on outside the property boundary and one inside the property boundary.

from the GNU version of the Collaborative International Dictionary of English

  • n. A bib, faucet, or short pipe, fitted with a turning stopper or plug for permitting or restraining the flow of a liquid or gas; a cock or valve for checking or regulating the flow of water, gas, etc., through or from a pipe, etc.
  • n. The turning plug, stopper, or spigot of a faucet.

from The Century Dictionary and Cyclopedia

  • n. A faucet with a valve of some form, operated by a handle: used to open or close a pipe or passage for water, gas, etc. Such cocks are sometimes made self-closing, to prevent waste.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. faucet consisting of a rotating device for regulating flow of a liquid


from Wiktionary, Creative Commons Attribution/Share-Alike License

From stop + cock.


  • When at last a stopcock is opened, and the compressed air is allowed to escape suddenly, the upward pressure from within is removed and the cylinder, by its own weight, forces itself deeply into the sand.

    Scientific News

  • I'm a better listener than I am storyteller, but at home I have a stopcock to control who dips into my well.

    Going Home Today

  • It was wired to the cap nut on the tank, and included a pressure gauge, stopcock, and the necessary threaded fittings for attachment.

    Golden State

  • Tom tried to shut off the flow, but the stopcock would not turn.

    Golden State

  • Then he adjusted the tank valve to a suitable pressure and opened the stopcock, to draw off a small amount of oxygen.

    Golden State

  • My brother Edmond found the thing in an antique shop and turned the tusks into gas jets controlled by a stopcock under the creature's chin.


  • The funniest one was a buret that I ordered just glassware with a stopcock that the Fisher folks felt moved to put inside a large box with a skull-and-crossbones on it.

    The Volokh Conspiracy » How Not to Do E-Commerce

  • In one instance I tracked down a plaintive newt-song I kept hearing in the garden to the flooded depths of a pipe sunk in the lawn with a water stopcock at the bottom.


  • To do this, turn off the stopcock, shut down the boiler and open all taps.

    Archive 2008-01-01

  • The tender is being amended in the light of the most recent results to include for the replacement of any lead service pipes from the watermain to the stopcock boundary box at each affected premises in Main Street, concluded Mr. Brennan.

    Archive 2008-01-01


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