[crum.ple] vb crum.pled ; crum.pling [ME crumplen, freq. of ME crumpen] vt (14c) 1: to press, bend, or crush out of shape: rumple
2: to cause to collapse ~ vi 1: to become crumpled
2: collapse
[2]crumple n (15c): a wrinkle or crease made by crumpling -- crum.ply adj