stopcock

  1. Noun.  A valve, tap or faucet which regulates the flow of liquid or gas through a pipe.
  2. Noun.  (British) 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.

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This entry was last updated on RefTopia from its source on 3/20/2012.