fau·cet /ˈfɔsət, ˈfɑs-/
  龍頭,旋塞
  Fau·cet n.
  1. 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.
  2. The enlarged end of a section of pipe which receives the spigot end of the next section.
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  faucet
       n : a regulator for controlling the flow of a liquid from a
           reservoir