/ˈfɔːsɪt/
[noun] A device attached to a pipe that controls the flow of water or another liquid, usually by turning a handle or knob. In North American English, it refers to the tap over a sink or bathtub.
The word 'faucet' comes from a term meaning 'to break into a cask' — it was born in a tavern, not a bathroom.
The story of 'faucet' begins not at the kitchen sink but in the cellars of medieval France, surrounded by barrels of wine. The word descends from the Old French verb 'fausser', meaning 'to break into' or 'to force open', which itself came from Late Latin 'falsare', meaning 'to falsify' or 'to damage'. In the context of wine barrels, 'fausser' described the act of driving a hole into a cask to draw out its contents. The small wooden peg or spout used to plug — and later control — that hole was called a 'fausset' in Old French. It was a humble stopper, a bung in a barrel, with no plumbing ambitions whatsoever.
The word crossed the English Channel and entered Middle English in the 15th century as 'faucet', initially referring to the same thing: a small peg or spigot used to stop the vent-hole in a cask of ale or wine. English tavern keepers and wine merchants would have used the word daily. At this stage, 'faucet' meant something you pushed into a hole to stop the flow, rather than something you turned to start it — essentially the opposite of its modern meaning, which is a neat little irony that the word carries quietly inside it.
Over the following centuries, as domestic plumbing developed and piped water became a feature of buildings, the vocabulary of liquid control shifted. The small spigot of the tavern slowly became associated with any device that regulated the flow of liquid through a pipe. By the 17th and 18th centuries, 'faucet' had expanded to refer to a valve or tap fitted to a pipe, not just a bung in a barrel. The mechanism changed; the name stayed.
What is especially interesting is the way the word's geography diverged. In Britain, 'tap' became the dominant word for the device on a sink or bathtub — a shorter, Old Norse-rooted word that had also been around since medieval times. In North America, however, 'faucet' held on and flourished. Today it is the standard American and Canadian term, while 'tap' remains the default in British, Australian, and most other varieties of English. The same object, born of the same history, wearing different names depending on which side of the Atlantic you are standing.
The Latin ancestor 'falsare' is also worth following a little further, because it quietly gave English another word: 'false' itself. Latin 'falsus' — meaning deceptive or incorrect — led through Old French 'fals' and Middle English into the modern word 'false'. So 'faucet' and 'false' are, in a distant way, cousins. The original sense of 'breaking into' or 'tampering with' something links them — one became a word for dishonesty, the other became a word for your kitchen tap. Language, like water, finds unexpected paths.