Tapping

Noun

 * 1) An act of making a light hit or strike against something.
 * 2) *1897,, Chapter 20
 * As he was speaking there was a soft tapping at the door. I went over and opened it...
 * 1)  A guitar technique in which the strings are tapped against the fingerboard

Verb
tapping



Thesaurus
aspiration, banging, blasting, bleeding, bloodletting, broaching, bursting, cracking, crashing, cupping, drafting, drainage, draining, drawing, emptying, exploding, explosive, flapping, knocking, milking, phlebotomy, pipetting, popping, pumping, rapping, siphoning, slapping, slatting, sucking, suction, venesection