noun
spigot
SPIG-uht/ˈspɪɡət/
A tap or valve that controls the flow of liquid.
Water flows from the brass spigot.

Etymology
A spigot originally stopped a cask's hole with a wooden plug. The name extended to a valve through the shared function of restraining or controlling liquid.
In context
a spigot on a pipe -- open the tap, water flows, close the tap, water shuts off.
More examples
- Water dripped from the outdoor spigot.
- The spigot controlled the flow from the barrel.
- He tightened the leaking spigot.
Forms
spigot · spigots