Pronunciation: (rum'pul), [key]
—v., -pled, -pling,
1. to crumple or crush into wrinkles: to rumple a sheet of paper.
2. to ruffle; tousle (sometimes fol. by up): The wind rumpled her hair.
to become wrinkled or crumpled: Tissue rumples easily.
a wrinkle or irregular fold; crease.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.