tap (2)EnglishOxford American Thesaurustap2 verb 1 she tapped on Lucy's door: knock, rap, strike, beat, drum, peck. 2 Dad leant forward and tapped me on the knee: touch, pat, nudge, strike lightly, slap lightly, jab, poke, dig, shove, hit.noun 1 there was a sharp tap at the door: knock, rap, strike, beat, peck; knocking, tapping, rapping, drumming, patter, pattering. 2 Jack was startled by a tap on the shoulder: touch, pat, nudge, light blow, light slap, jab, poke, dig, shove, pressure.