From Longman Dictionary of Contemporary Englishtap something ↔ out phrasal verb1 to hit something lightly, especially with your fingers or foot, in order to make a pattern of sounds He whistled the tune and tapped out the rhythm.2 to write something with a computer Brian tapped out a name on his small electronic organizer. → tap→ See Verb table
Examples from the Corpus
tap out• These things hardly disturb me, as I tap these words out.• He shook hands with Edward, tapped his pipe out at the bar, nodded, and left. 