To drum your fingers is to tap them in sequence, impatiently. Drum your fingers on the desk.
The sequence is what makes it drumming rather than tapping. To drum your fingers in a quiet room is one of the surest ways to annoy everybody in it.
1phrasedrum your fingersTo tap the fingers in sequence, impatiently.
“He would drum your fingers on the table all the way through the film.”
drum your fingers is a gesture.
Practised in Body Language & Gestures