Crinkle

To form with short turns, bends, or wrinkles; to mold into inequalities or sinuosities; to cause to wrinkle or curl.

To turn or wind; to run in and out in many short bends or turns; to curl; to run in waves; to wrinkle; also, to rustle, as stiff cloth when moved.

A winding or turn; wrinkle; sinuosity.