Definitions for "Percussion"
The act of percussing, or striking one body against another; forcible collision, esp. such as gives a sound or report.
Hence: The effect of violent collision; vibratory shock; impression of sound on the ear.
The act of tapping or striking the surface of the body in order to learn the condition of the parts beneath by the sound emitted or the sensation imparted to the fingers. Percussion is said to be immediate if the blow is directly upon the body; if some interventing substance, as a pleximeter, is, used, it is called mediate.
A means of ignition of a propellant charge by a mechanical blow against the primer (modern) or cap (antique).
the act of exploding a percussion cap
The type of ignition system used in some black powder firearms where a hammer or striker impacts a percussion cap which ignites the powder charge. See also Cap and Ball.
Keywords:  drumline, see
See Drumline