/ ˈfɔːsɪt; NAmE / ( NAmE ) ( BrE tap ) noun
a device that controls the flow of water from a pipe :
the hot / cold faucet
to turn a faucet on / off
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WORD ORIGIN
late Middle English (denoting a bung for the vent hole of a cask, or a tap for drawing liquor from a container): from Old French fausset , from Provençal falset , from falsar to bore. The current sense dates from the mid 19th cent.