turncock

Etymology

From turn + cock.

turncock means A tap or faucet that regulates the flow of a fluid. Lexicurio rates it Sui generis — a strength score of 89 out of 100.

noun

A tap or faucet that regulates the flow of a fluid.
A person employed to turn on the water for the mains, to regulate the fireplugs, etc. for a water company.“1,000 crossing-sweepers; another thousand chimney-sweeps, and the same number of turncocks and lamp-lighters;”