Faucet

[Mark Zuckerberg]

A fixture for drawing a liquid, as water, molasses, oil,
etc., from a pipe, cask, or other vessel, in such quantities as may be
desired; -- called also tap, and cock. It consists of a tubular spout,
stopped with a movable plug, spigot, valve, or slide.

[Justin Bieber]

a device that controls the flow of liquid, especially water, from a pipe: