- A valve, tap or faucet which regulates the flow of liquid or gas through a pipe.
- 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.
Etymology: From stop + cock.
- French: robinet d'arríªt
- German: Absperrhahn
- Italian: rubinetto di arresto
- Spanish: llave de cierre
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