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stopcock

American  
[stop-kok] / ˈstɒpˌkɒk /

noun

  1. cock.


stopcock British  
/ ˈstɒpˌkɒk /

noun

  1. a valve used to control or stop the flow of a fluid in a pipe

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of stopcock

First recorded in 1575–85; stop + cock 1

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The image immediately above shows the location of a gas stopcock cover.

From BBC • Feb. 18, 2014

If you have sufficient reserve in your vacuum calculations after counting the pressure increases from hose lengths and fittings, adding a stopcock or two is helpful.

From Time Magazine Archive

Similarly, a stopcock on the output side of the filter could keep spills to a minimum.

From Time Magazine Archive

If the secondary filter has a drain, drain it, close the stopcock, refill it with fresh fuel and refit it to the flange.

From Time Magazine Archive

A long india-rubber tube is attached to the bottom of the jar, ending in a metallic tube, and furnished with a stopcock.

From The Physical Life of Woman: Advice to the Maiden, Wife and Mother by Napheys, George H. (George Henry)