English to English

noun (n)

• a plug for a bunghole in a cask(noun.artifact)

  Synonym:
  tap
  

  source: wordnet30
• a regulator for controlling the flow of a liquid from a reservoir(noun.artifact)

  Synonym:
  faucet
  

  source: wordnet30
• A pin or peg used to stop the vent in a cask; also, the plug of a faucet or cock.(noun)

  source: webster1913