pit•ter-pat•terPronunciation: (pit'ur-pat'ur), [key]
the sound of a rapid succession of light beats or taps, as of rain, footsteps, etc.
to produce or move with this sound: She pitter-pattered along the hallway.
with such a sound: to run pitter-patter through the house.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.