SPIGOT

n. faucet, tap; plug used to stop an opening in a cask

A tap is a valve for controlling the release of a liquid or gas. In the British Isles and normally in the Commonwealth the word is used for any everyday type of valve, particularly the fittings that control water supply to bathtubs and sinks. In the U.S. the usage is sometimes more specialised, with the term "tap" restricted to uses such as beer taps and the word faucet being used for water outlets; however some Americans use "tap" in the broader sense as well.
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Noun
1. a faucet for drawing water from a pipe or cask
(synonym) water faucet, water tap, tap, hydrant
(hypernym) faucet
2. a plug for a bunghole in a cask
(synonym) tap
(hypernym) plug, stopper, stopple
(part-holonym) barrel, cask

(n.)
A pin or peg used to stop the vent in a cask; also, the plug of a faucet or cock.
  

See sprag. 1/9/69

Dispositif empêchant le déplacement des plates-formes ou des palettes sur les rails de guidage de la soute d'un aéronef. 1/9/69