noun

1. A violent oscillation or vibration.

   “The discomfort caused by the bat's reverberation surprised Tommy.”

2. An echo, or a series of overlapping echoes.

   “The reverberation that followed Marilyn's shout filled the cavern.”

3. The reflection of light or heat; a reflection in, or as though in, a mirror.

   “Like the several reverberations of the same image from two opposite looking glasses.”