noun A consequence or ensuing result of some action.
You realize this little stunt of yours is going to have some pretty serious repercussions.
noun The act of driving back, or the state of being driven back; reflection; reverberation.
the repercussion of sound
noun Rapid reiteration of the same sound.
noun The subsidence of a tumour or eruption by the action of a repellent.
noun In a vaginal examination, the act of imparting through the uterine wall with the finger a shock to the foetus, so that it bounds upward, and falls back again against the examining finger.