Noun: turncock 'turn,kók
- One employed to control water supply by turning water mains on and off
"The turncock was called to shut off the water main after a pipe burst"
- Faucet consisting of a rotating device for regulating flow of a liquid
"He turned the turncock to shut off the water supply";
- stopcock, cock
Derived forms: turncocks
Type of: employe [US], employee, faucet [N. Amer], spigot, tap