Definition of "stopcock" []

• A valve that regulates the flow of fluid through a pipe; a faucet. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "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."
• "I'm a better listener than I am storyteller, but at home I have a stopcock to control who dips into my well."
• "It was wired to the cap nut on the tank, and included a pressure gauge, stopcock, and the necessary threaded fittings for attachment."