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English definition of “tap”

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tap

verb
 
 
/tæp/ ( present participle tapping, past tense and past participle tapped)
KNOCK [I, T] B2 to knock or touch something gently: She tapped her fingers nervously on the table. I tapped on the window to try and get her attention.Touching and feelingShowing affectionSounds made by objects, movement or impact
A SUPPLY [T] If you tap a supply of something, you use what is available: There are immense natural resources here waiting to be tapped.Using and misusing
TELEPHONE [T] to use a special piece of equipment to listen to someone's telephone calls: [often passive] I think the phone's been tapped.Amplifiers, microphones and speakersSpying and espionageCommunicating by telephone
(Definition of tap verb from the Cambridge Learners Dictionary © Cambridge University Press)
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