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English definition of “tap”

tap

noun [C]
 
 
/tæp/
WATER UK (US faucet) B1 the part at the end of a pipe that controls the flow of water: the cold/hot tap to turn a tap on/off She rinsed the cup under the tap.Plumbing and pipes and sewage
KNOCK B2 a gentle knock or touch, or the noise made by knocking something gently: I felt a tap on my shoulder. There was a tap at the door.Touching and feelingShowing affection
TELEPHONE a small piece of equipment that can be fixed to someone's telephone in order to listen to their telephone callsSpying and espionage
on tap easily available: They have all that sort of information on tap.Available and accessiblePresent
(Definition of tap noun from the Cambridge Learners Dictionary © Cambridge University Press)
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