STOPCOCK n. 2 definitions
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.
TURN v. 2 definitions
the face of; as, to turn down cards. (c) To lower, or reduce in size, by turning a valve, stopcock, or the like; as, turn down the lights. -- To turn in. (a) To fold or double under; as, to turn in the edge of cloth. (b) To direct inwards; as, to turn the toes in when walking. (c) To contribute; to deliver up; as, he…