percussion

noun

1. 1

   The collision of two bodies in order to produce a sound.

2. 2

   The sound so produced.

3. 3

   The detonation of a percussion cap in a firearm.

4. 4

   The tapping of the body as an aid to medical diagnosis.

5. 5

   The section of an orchestra or band containing percussion instruments; such instruments considered as a group; in bands, may be separate from drum kits.

6. 6

   The repeated striking of an object to break or shape it, as in percussion drilling.

7. 7

   The outer side of the hand.