plug cock

plug cock

[′pləg ‚käk]
(mechanical engineering)

ground-key faucet

A faucet through which flow is controlled by a slightly tapered plug with a hole in it; when the faucet is on, the fluid flows through the hole; when the plug is turned through 90°, the flow is stopped.
References in periodicals archive ?
The collection features early advertising signs including Mayo's Plug Cock O' the Walk porcelain sign, Drink Moxie Good at Any Temperature; a Monarch Sweet Pickles counter top display; Brown's Seeds rack; architectural fences and grates as well as deco lighting fixtures.