Stopcock

[Jason Yan]

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.

[Becky]

Someone who inhibits another persons game, thus lowering his or her chances to [beat it up]. Synonym of [cock block] or [baller block].

[Tanya Shivari]

Device in Chemistry or other science classes to restrict or allow the flow of liquid in a lab. However in OLCHS it is now the funniest word at the time. It is used in anyway that fits. Mostly used around immature teens such as myself.

[Zipporah Schumaker]

What you want to do with a [shemale] to [keep] her penis in its [zipper].

[Monty]

An externally operated valve regulating the flow of a liquid or gas through a pipe, in particular one on the water main supplying a house.

[Ernesto]

a valve in a pipe that controls the flow of liquid through it