repercussion

repercussion is a Noun

Definition:

[1] The act of driving back, or the state of being driven back; reflection; reverberation; as, the repercussion of sound. Ever echoing back in endless repercussion. Hare.

[2] Rapid reiteration of the same sound.

[3] The subsidence of a tumor or eruption by the action of a repellent. Dunglison.

[4] In a vaginal examination, the act of imparting through the uterine wall with the finger a shock to the fetus, so that it bounds upward, and falls back again against the examining finger.